diff --git a/.mailmap b/.mailmap
deleted file mode 100644
index 84de0f3..0000000
--- a/.mailmap
+++ /dev/null
@@ -1 +0,0 @@
-Hector Oswaldo Caballero <hector.caballero@ericsson.com>
diff --git a/WORKSPACE b/WORKSPACE
index 666572c..2cbe3be 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "a029d8e41d6211c8b23052aa0a0c2c7649577e85",
+    commit = "20079f696c22c733053077b13c0dc6d9902e6b8e",
     #local_path = "/home/<user>/projects/bazlets",
 )
 
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/AccountReindexRunnable.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/AccountReindexRunnable.java
index eb65106..70ef751 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/AccountReindexRunnable.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/AccountReindexRunnable.java
@@ -18,7 +18,7 @@
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexingHandler.Operation;
 import com.ericsson.gerrit.plugins.highavailability.forwarder.rest.AbstractIndexRestApiServlet;
 import com.google.common.flogger.FluentLogger;
-import com.google.gerrit.reviewdb.client.Account;
+import com.google.gerrit.entities.Account;
 import com.google.gerrit.server.account.AccountState;
 import com.google.gerrit.server.account.Accounts;
 import com.google.gerrit.server.util.OneOffRequestContext;
@@ -53,12 +53,11 @@
   @Override
   protected Optional<Timestamp> indexIfNeeded(AccountState as, Timestamp sinceTs) {
     try {
-      Account a = as.getAccount();
-      Timestamp accountTs = a.getRegisteredOn();
+      Account a = as.account();
+      Timestamp accountTs = a.registeredOn();
       if (accountTs.after(sinceTs)) {
-        log.atInfo().log(
-            "Index %s/%s/%s/%s", a.getId(), a.getFullName(), a.getPreferredEmail(), accountTs);
-        accountIdx.index(a.getId(), Operation.INDEX, Optional.empty());
+        log.atInfo().log("Index %s/%s/%s/%s", a.id(), a.fullName(), a.preferredEmail(), accountTs);
+        accountIdx.index(a.id(), Operation.INDEX, Optional.empty());
         return Optional.of(accountTs);
       }
     } catch (IOException e) {
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ChangeReindexRunnable.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ChangeReindexRunnable.java
index dd323b4..0787953 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ChangeReindexRunnable.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ChangeReindexRunnable.java
@@ -19,8 +19,8 @@
 import com.ericsson.gerrit.plugins.highavailability.forwarder.rest.AbstractIndexRestApiServlet;
 import com.google.common.collect.Streams;
 import com.google.common.flogger.FluentLogger;
-import com.google.gerrit.reviewdb.client.Change;
-import com.google.gerrit.reviewdb.client.Project;
+import com.google.gerrit.entities.Change;
+import com.google.gerrit.entities.Project;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.notedb.ChangeNotes;
 import com.google.gerrit.server.notedb.ChangeNotes.Factory.ChangeNotesResult;
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ProjectReindexRunnable.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ProjectReindexRunnable.java
index ff5a965..00c574d 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ProjectReindexRunnable.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ProjectReindexRunnable.java
@@ -15,7 +15,7 @@
 package com.ericsson.gerrit.plugins.highavailability.autoreindex;
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.rest.AbstractIndexRestApiServlet;
-import com.google.gerrit.reviewdb.client.Project;
+import com.google.gerrit.entities.Project;
 import com.google.gerrit.server.project.ProjectCache;
 import com.google.gerrit.server.util.OneOffRequestContext;
 import com.google.inject.Inject;
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/event/ProjectNameKeyAdapter.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/event/ProjectNameKeyAdapter.java
deleted file mode 100644
index 8c00282..0000000
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/event/ProjectNameKeyAdapter.java
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright (C) 2020 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package com.ericsson.gerrit.plugins.highavailability.event;
-
-import com.google.gerrit.reviewdb.client.Project;
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-import java.lang.reflect.Type;
-
-public class ProjectNameKeyAdapter
-    implements JsonSerializer<Project.NameKey>, JsonDeserializer<Project.NameKey> {
-  @Override
-  public JsonElement serialize(
-      Project.NameKey project, Type typeOfSrc, JsonSerializationContext context) {
-    return new JsonPrimitive(project.get());
-  }
-
-  @Override
-  public Project.NameKey deserialize(
-      JsonElement json, Type typeOfT, JsonDeserializationContext context)
-      throws JsonParseException {
-    if (json.isJsonObject()) {
-      return Project.nameKey(json.getAsJsonObject().get("name").getAsJsonPrimitive().getAsString());
-    }
-    return Project.nameKey(json.getAsString());
-  }
-}
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexAccountHandler.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexAccountHandler.java
index f31331d..b1a595c 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexAccountHandler.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexAccountHandler.java
@@ -14,7 +14,7 @@
 
 package com.ericsson.gerrit.plugins.highavailability.forwarder;
 
-import com.google.gerrit.reviewdb.client.Account;
+import com.google.gerrit.entities.Account;
 import com.google.gerrit.server.index.account.AccountIndexer;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexChangeHandler.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexChangeHandler.java
index add93d7..064783c 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexChangeHandler.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexChangeHandler.java
@@ -20,7 +20,7 @@
 import com.ericsson.gerrit.plugins.highavailability.index.ChangeCheckerImpl;
 import com.ericsson.gerrit.plugins.highavailability.index.ForwardedIndexExecutor;
 import com.google.common.base.Splitter;
-import com.google.gerrit.reviewdb.client.Change;
+import com.google.gerrit.entities.Change;
 import com.google.gerrit.server.index.change.ChangeIndexer;
 import com.google.gerrit.server.notedb.ChangeNotes;
 import com.google.gerrit.server.project.NoSuchChangeException;
@@ -150,7 +150,7 @@
   }
 
   private static Change.Id parseChangeId(String id) {
-    return new Change.Id(Integer.parseInt(Splitter.on("~").splitToList(id).get(1)));
+    return Change.id(Integer.parseInt(Splitter.on("~").splitToList(id).get(1)));
   }
 
   private static boolean isCausedByNoSuchChangeException(Throwable throwable) {
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexGroupHandler.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexGroupHandler.java
index 127af36..ab31659 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexGroupHandler.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexGroupHandler.java
@@ -14,7 +14,7 @@
 
 package com.ericsson.gerrit.plugins.highavailability.forwarder;
 
-import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.entities.AccountGroup;
 import com.google.gerrit.server.index.group.GroupIndexer;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexProjectHandler.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexProjectHandler.java
index b6daf41..20ffefd 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexProjectHandler.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexProjectHandler.java
@@ -14,8 +14,8 @@
 
 package com.ericsson.gerrit.plugins.highavailability.forwarder;
 
+import com.google.gerrit.entities.Project;
 import com.google.gerrit.index.project.ProjectIndexer;
-import com.google.gerrit.reviewdb.client.Project;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import java.util.Optional;
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedProjectListUpdateHandler.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedProjectListUpdateHandler.java
index 84f4675..857d2db 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedProjectListUpdateHandler.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedProjectListUpdateHandler.java
@@ -15,7 +15,7 @@
 package com.ericsson.gerrit.plugins.highavailability.forwarder;
 
 import com.google.common.flogger.FluentLogger;
-import com.google.gerrit.reviewdb.client.Project;
+import com.google.gerrit.entities.Project;
 import com.google.gerrit.server.project.ProjectCache;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
@@ -45,7 +45,7 @@
    * @throws IOException
    */
   public void update(String projectName, boolean remove) throws IOException {
-    Project.NameKey projectKey = new Project.NameKey(projectName);
+    Project.NameKey projectKey = Project.nameKey(projectName);
     try {
       Context.setForwardedEvent(true);
       if (remove) {
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/AbstractIndexRestApiServlet.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/AbstractIndexRestApiServlet.java
index 5603fc2..4456064 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/AbstractIndexRestApiServlet.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/AbstractIndexRestApiServlet.java
@@ -22,8 +22,8 @@
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexingHandler.Operation;
 import com.ericsson.gerrit.plugins.highavailability.forwarder.IndexEvent;
 import com.google.common.base.Charsets;
+import com.google.gerrit.server.events.EventGson;
 import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.util.Optional;
@@ -32,11 +32,11 @@
 
 public abstract class AbstractIndexRestApiServlet<T> extends AbstractRestApiServlet {
   private static final long serialVersionUID = -1L;
-  private static final Gson gson = new GsonBuilder().create();
 
   private final ForwardedIndexingHandler<T> forwardedIndexingHandler;
   private final IndexName indexName;
   private final boolean allowDelete;
+  private final Gson gson;
 
   public enum IndexName {
     CHANGE,
@@ -55,15 +55,17 @@
   AbstractIndexRestApiServlet(
       ForwardedIndexingHandler<T> forwardedIndexingHandler,
       IndexName indexName,
-      boolean allowDelete) {
+      boolean allowDelete,
+      @EventGson Gson gson) {
     this.forwardedIndexingHandler = forwardedIndexingHandler;
     this.indexName = indexName;
     this.allowDelete = allowDelete;
+    this.gson = gson;
   }
 
   AbstractIndexRestApiServlet(
       ForwardedIndexingHandler<T> forwardedIndexingHandler, IndexName indexName) {
-    this(forwardedIndexingHandler, indexName, false);
+    this(forwardedIndexingHandler, indexName, false, new Gson());
   }
 
   @Override
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/EventRestApiServlet.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/EventRestApiServlet.java
index 3d2d25e..37f0f20 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/EventRestApiServlet.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/EventRestApiServlet.java
@@ -23,7 +23,9 @@
 import com.google.common.io.CharStreams;
 import com.google.common.net.MediaType;
 import com.google.gerrit.server.events.Event;
+import com.google.gerrit.server.events.EventGson;
 import com.google.gerrit.server.permissions.PermissionBackendException;
+import com.google.gson.Gson;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import java.io.IOException;
@@ -35,10 +37,10 @@
   private static final long serialVersionUID = -1L;
 
   private final ForwardedEventHandler forwardedEventHandler;
-  private final GsonProvider gson;
+  private final Gson gson;
 
   @Inject
-  EventRestApiServlet(ForwardedEventHandler forwardedEventHandler, GsonProvider gson) {
+  EventRestApiServlet(ForwardedEventHandler forwardedEventHandler, @EventGson Gson gson) {
     this.forwardedEventHandler = forwardedEventHandler;
     this.gson = gson;
   }
@@ -61,6 +63,6 @@
 
   private Event getEventFromRequest(HttpServletRequest req) throws IOException {
     String jsonEvent = CharStreams.toString(req.getReader());
-    return gson.get().fromJson(jsonEvent, Event.class);
+    return gson.fromJson(jsonEvent, Event.class);
   }
 }
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/GsonParser.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/GsonParser.java
index 8db2488..de02912 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/GsonParser.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/GsonParser.java
@@ -16,9 +16,12 @@
 
 import com.ericsson.gerrit.plugins.highavailability.cache.Constants;
 import com.google.common.base.Strings;
-import com.google.gerrit.reviewdb.client.Account;
-import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.entities.Account;
+import com.google.gerrit.entities.AccountGroup;
+import com.google.gerrit.server.events.EventGson;
 import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 
@@ -27,32 +30,40 @@
   private final Gson gson;
 
   @Inject
-  GsonParser(GsonProvider gson) {
-    this.gson = gson.get();
+  public GsonParser(@EventGson Gson gson) {
+    this.gson = gson;
   }
 
-  public Object fromJson(String cacheName, String json) {
+  public Object fromJson(String cacheName, String jsonString) {
+    JsonElement json = gson.fromJson(Strings.nullToEmpty(jsonString), JsonElement.class);
     Object key;
     // Need to add a case for 'adv_bases'
+    if (!json.isJsonObject()) {
+      return json.getAsString();
+    }
+    JsonObject asJsonObject = json.getAsJsonObject();
     switch (cacheName) {
       case Constants.ACCOUNTS:
-        key = gson.fromJson(Strings.nullToEmpty(json).trim(), Account.Id.class);
+        key = asJsonObject.has("id") ? Account.id(asJsonObject.get("id").getAsInt()) : null;
         break;
       case Constants.GROUPS:
-        key = gson.fromJson(Strings.nullToEmpty(json).trim(), AccountGroup.Id.class);
+        key = asJsonObject.has("id") ? AccountGroup.id(asJsonObject.get("id").getAsInt()) : null;
         break;
       case Constants.GROUPS_BYINCLUDE:
       case Constants.GROUPS_MEMBERS:
-        key = gson.fromJson(Strings.nullToEmpty(json).trim(), AccountGroup.UUID.class);
+        key =
+            asJsonObject.has("uuid")
+                ? AccountGroup.uuid(asJsonObject.get("uuid").getAsString())
+                : null;
         break;
       case Constants.PROJECT_LIST:
-        key = gson.fromJson(Strings.nullToEmpty(json), Object.class);
+        key = gson.fromJson(json, Object.class);
         break;
       default:
         try {
-          key = gson.fromJson(Strings.nullToEmpty(json).trim(), String.class);
+          key = gson.fromJson(json, String.class);
         } catch (Exception e) {
-          key = gson.fromJson(Strings.nullToEmpty(json), Object.class);
+          key = gson.fromJson(json, Object.class);
         }
     }
     return key;
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/GsonProvider.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/GsonProvider.java
deleted file mode 100644
index c600019..0000000
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/GsonProvider.java
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright (C) 2019 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package com.ericsson.gerrit.plugins.highavailability.forwarder.rest;
-
-import com.ericsson.gerrit.plugins.highavailability.event.ProjectNameKeyAdapter;
-import com.google.common.base.Supplier;
-import com.google.gerrit.reviewdb.client.Project;
-import com.google.gerrit.server.events.Event;
-import com.google.gerrit.server.events.EventDeserializer;
-import com.google.gerrit.server.events.SupplierDeserializer;
-import com.google.gerrit.server.events.SupplierSerializer;
-import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
-import com.google.inject.Provider;
-
-public class GsonProvider implements Provider<Gson> {
-
-  @Override
-  public Gson get() {
-    return new GsonBuilder()
-        .registerTypeAdapter(Event.class, new EventDeserializer())
-        .registerTypeAdapter(Project.NameKey.class, new ProjectNameKeyAdapter())
-        .registerTypeAdapter(Supplier.class, new SupplierSerializer())
-        .registerTypeAdapter(Supplier.class, new SupplierDeserializer())
-        .create();
-  }
-}
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/HttpSession.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/HttpSession.java
index cf98aae..6d801f6 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/HttpSession.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/HttpSession.java
@@ -15,8 +15,8 @@
 package com.ericsson.gerrit.plugins.highavailability.forwarder.rest;
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.rest.HttpResponseHandler.HttpResult;
-import com.google.common.annotations.VisibleForTesting;
 import com.google.common.net.MediaType;
+import com.google.gerrit.server.events.EventGson;
 import com.google.gson.Gson;
 import com.google.inject.Inject;
 import java.io.IOException;
@@ -33,9 +33,9 @@
   private final Gson gson;
 
   @Inject
-  HttpSession(CloseableHttpClient httpClient, GsonProvider gsonProvider) {
+  HttpSession(CloseableHttpClient httpClient, @EventGson Gson gson) {
     this.httpClient = httpClient;
-    this.gson = gsonProvider.get();
+    this.gson = gson;
   }
 
   HttpResult post(String uri) throws IOException {
@@ -65,8 +65,7 @@
     }
   }
 
-  @VisibleForTesting
-  String jsonEncode(Object content) {
+  private String jsonEncode(Object content) {
     if (content instanceof String) {
       return (String) content;
     }
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexAccountRestApiServlet.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexAccountRestApiServlet.java
index e7f1447..fa38cc3 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexAccountRestApiServlet.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexAccountRestApiServlet.java
@@ -15,7 +15,7 @@
 package com.ericsson.gerrit.plugins.highavailability.forwarder.rest;
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexAccountHandler;
-import com.google.gerrit.reviewdb.client.Account;
+import com.google.gerrit.entities.Account;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 
@@ -30,6 +30,6 @@
 
   @Override
   Account.Id parse(String id) {
-    return new Account.Id(Integer.parseInt(id));
+    return Account.id(Integer.parseInt(id));
   }
 }
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexBatchChangeRestApiServlet.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexBatchChangeRestApiServlet.java
index 6613ee6..bebfae9 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexBatchChangeRestApiServlet.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexBatchChangeRestApiServlet.java
@@ -16,6 +16,8 @@
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexBatchChangeHandler;
 import com.google.gerrit.extensions.restapi.Url;
+import com.google.gerrit.server.events.EventGson;
+import com.google.gson.Gson;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 
@@ -24,8 +26,8 @@
   private static final long serialVersionUID = -1L;
 
   @Inject
-  IndexBatchChangeRestApiServlet(ForwardedIndexBatchChangeHandler handler) {
-    super(handler, IndexName.CHANGE, true);
+  IndexBatchChangeRestApiServlet(ForwardedIndexBatchChangeHandler handler, @EventGson Gson gson) {
+    super(handler, IndexName.CHANGE, true, gson);
   }
 
   @Override
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexChangeRestApiServlet.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexChangeRestApiServlet.java
index 046611e..71e10fb 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexChangeRestApiServlet.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexChangeRestApiServlet.java
@@ -16,6 +16,8 @@
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexChangeHandler;
 import com.google.gerrit.extensions.restapi.Url;
+import com.google.gerrit.server.events.EventGson;
+import com.google.gson.Gson;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 
@@ -24,8 +26,8 @@
   private static final long serialVersionUID = -1L;
 
   @Inject
-  IndexChangeRestApiServlet(ForwardedIndexChangeHandler handler) {
-    super(handler, IndexName.CHANGE, true);
+  IndexChangeRestApiServlet(ForwardedIndexChangeHandler handler, @EventGson Gson gson) {
+    super(handler, IndexName.CHANGE, true, gson);
   }
 
   @Override
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexGroupRestApiServlet.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexGroupRestApiServlet.java
index a8bbb5e..35c526f 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexGroupRestApiServlet.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexGroupRestApiServlet.java
@@ -15,7 +15,7 @@
 package com.ericsson.gerrit.plugins.highavailability.forwarder.rest;
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexGroupHandler;
-import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.entities.AccountGroup;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 
@@ -30,6 +30,6 @@
 
   @Override
   AccountGroup.UUID parse(String id) {
-    return new AccountGroup.UUID(id);
+    return AccountGroup.uuid(id);
   }
 }
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexProjectRestApiServlet.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexProjectRestApiServlet.java
index cc87442..31df2bb 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexProjectRestApiServlet.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexProjectRestApiServlet.java
@@ -15,8 +15,8 @@
 package com.ericsson.gerrit.plugins.highavailability.forwarder.rest;
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexProjectHandler;
+import com.google.gerrit.entities.Project;
 import com.google.gerrit.extensions.restapi.Url;
-import com.google.gerrit.reviewdb.client.Project;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 
@@ -31,6 +31,6 @@
 
   @Override
   Project.NameKey parse(String projectName) {
-    return new Project.NameKey(Url.decode(projectName));
+    return Project.nameKey(Url.decode(projectName));
   }
 }
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/RestForwarder.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/RestForwarder.java
index 6426b5a..ea4ad10 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/RestForwarder.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/RestForwarder.java
@@ -25,6 +25,8 @@
 import com.google.gerrit.extensions.annotations.PluginName;
 import com.google.gerrit.extensions.restapi.Url;
 import com.google.gerrit.server.events.Event;
+import com.google.gerrit.server.events.EventGson;
+import com.google.gson.Gson;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
 import java.io.IOException;
@@ -46,7 +48,7 @@
   private final String pluginRelativePath;
   private final Configuration cfg;
   private final Provider<Set<PeerInfo>> peerInfoProvider;
-  private final GsonProvider gson;
+  private final Gson gson;
   private final RestForwarderScheduler scheduler;
 
   @Inject
@@ -55,7 +57,7 @@
       @PluginName String pluginName,
       Configuration cfg,
       Provider<Set<PeerInfo>> peerInfoProvider,
-      GsonProvider gson,
+      @EventGson Gson gson,
       RestForwarderScheduler scheduler) {
     this.httpSession = httpClient;
     this.pluginRelativePath = Joiner.on("/").join("plugins", pluginName);
@@ -124,7 +126,7 @@
 
   @Override
   public CompletableFuture<Boolean> evict(final String cacheName, final Object key) {
-    String json = gson.get().toJson(key);
+    String json = gson.toJson(key);
     return execute(RequestMethod.POST, "invalidate cache " + cacheName, "cache", cacheName, json);
   }
 
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java
index 1656eb9..23712be 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java
@@ -16,9 +16,9 @@
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.IndexEvent;
 import com.google.common.flogger.FluentLogger;
-import com.google.gerrit.reviewdb.client.Change;
-import com.google.gerrit.reviewdb.client.Comment;
-import com.google.gerrit.reviewdb.client.RefNames;
+import com.google.gerrit.entities.Change;
+import com.google.gerrit.entities.Comment;
+import com.google.gerrit.entities.RefNames;
 import com.google.gerrit.server.CommentsUtil;
 import com.google.gerrit.server.change.ChangeFinder;
 import com.google.gerrit.server.git.GitRepositoryManager;
@@ -74,7 +74,7 @@
     IndexEvent event = new IndexEvent();
     event.eventCreatedOn = ts;
     try (Repository repo = gitRepoMgr.openRepository(changeNotes.get().getProjectName())) {
-      event.targetSha = getBranchTargetSha(repo);
+      event.targetSha = getBranchTargetSha();
       event.metaSha = getMetaSha(repo);
       return Optional.of(event);
     } catch (IOException e) {
@@ -107,7 +107,7 @@
           return (computedChangeTs.get() > indexEvent.eventCreatedOn)
               || (computedChangeTs.get() == indexEvent.eventCreatedOn)
                   && (Objects.isNull(indexEvent.targetSha)
-                      || Objects.equals(getBranchTargetSha(repo), indexEvent.targetSha))
+                      || Objects.equals(getBranchTargetSha(), indexEvent.targetSha))
                   && (Objects.isNull(indexEvent.metaSha)
                       || Objects.equals(getMetaSha(repo), indexEvent.metaSha));
         }
@@ -136,7 +136,7 @@
           + "@"
           + getComputedChangeTs().map(IndexEvent::format)
           + "/target:"
-          + getBranchTargetSha(repo)
+          + getBranchTargetSha()
           + "/meta:"
           + getMetaSha(repo);
     } catch (IOException e) {
@@ -145,9 +145,9 @@
     }
   }
 
-  private String getBranchTargetSha(Repository repo) {
-    try {
-      String refName = changeNotes.get().getChange().getDest().get();
+  private String getBranchTargetSha() {
+    try (Repository repo = gitRepoMgr.openRepository(changeNotes.get().getProjectName())) {
+      String refName = changeNotes.get().getChange().getDest().branch();
       Ref ref = repo.exactRef(refName);
       if (ref == null) {
         log.atWarning().log("Unable to find target ref %s for change %s", refName, changeId);
diff --git a/src/main/resources/Documentation/about.md b/src/main/resources/Documentation/about.md
index fd0b56e..83d3862 100644
--- a/src/main/resources/Documentation/about.md
+++ b/src/main/resources/Documentation/about.md
@@ -103,3 +103,17 @@
 
 For further information and supported options, refer to [config](config.md)
 documentation.
+
+### Last index update timestamp storage
+
+The plugin keeps track of the timestamp when it lastly updated an index.
+When the [`autoReindex.enabled` option](config.md) is set to `true`, the timestamp
+is used to determine which changes to reindex when a node is temporarily out of
+sync with the primary, for example, after a node being offline for a long time.
+
+The HA plugin keeps the last update timestamp for each index in the following files:
+* `<gerrit_home>/data/high-availability/group`
+* `<gerrit_home>/data/high-availability/account`
+* `<gerrit_home>/data/high-availability/change`
+
+The timestamp is stored in this format `yyyy-mm-ddTHH:MM:SS.ss`, i.e.: `2020-12-18T12:17:53.25`.
diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
index 360218d..5186bd1 100644
--- a/src/main/resources/Documentation/config.md
+++ b/src/main/resources/Documentation/config.md
@@ -3,8 +3,8 @@
 =========================
 
 The @PLUGIN@ plugin must be installed on all the instances. Each instance should
-be configured with the same [gerrit.serverId](https://gerrit-documentation.storage.googleapis.com/Documentation/3.0.0/config-gerrit.html#gerrit.serverId).
-If there are existing changes in [NoteDb](https://gerrit-documentation.storage.googleapis.com/Documentation/3.0.0/note-db.html)
+be configured with the same [gerrit.serverId](https://gerrit-documentation.storage.googleapis.com/Documentation/3.1.0/config-gerrit.html#gerrit.serverId).
+If there are existing changes in [NoteDb](https://gerrit-documentation.storage.googleapis.com/Documentation/3.1.0/note-db.html)
 made with another `serverId`, then this plugin might not be able to access them.
 Likewise, if the HA gerrit.serverIds differ, then changes conveyed by one
 instance will not be accessible by the other.
@@ -180,7 +180,11 @@
     Defaults to true.
 
 ```index.numStripedLocks```
-:   Number of striped locks to use during reindexing.
+:   Number of striped locks to use during reindexing. Should be of the same order
+    of magnitude of the open changes. I.e.: if one has 5000 changes, one might want
+    to have at least 1000 striped locks. The value has to be tuned empirically
+    by checking the number of failures in acquiring the locking. Checking the
+    `consider increasing the number of shards` warnings should help.
     Defaults to 10.
 
 ```index.synchronize```
diff --git a/src/test/docker/gerrit/Dockerfile b/src/test/docker/gerrit/Dockerfile
index 707e5ae..5f455d4 100644
--- a/src/test/docker/gerrit/Dockerfile
+++ b/src/test/docker/gerrit/Dockerfile
@@ -1,6 +1,6 @@
-FROM gerritcodereview/gerrit:3.0.12
+FROM gerritcodereview/gerrit:3.1.12
 
-ENV GERRIT_BRANCH=stable-3.0
+ENV GERRIT_BRANCH=stable-3.1
 
 ENV GERRIT_CI_URL=https://gerrit-ci.gerritforge.com/job
 
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CacheEvictionIT.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CacheEvictionIT.java
index 7233aac..e91e2ae 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CacheEvictionIT.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CacheEvictionIT.java
@@ -33,7 +33,7 @@
 import com.google.gerrit.acceptance.TestPlugin;
 import com.google.gerrit.acceptance.UseLocalDisk;
 import com.google.gerrit.acceptance.UseSsh;
-import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.entities.AccountGroup;
 import com.google.inject.Inject;
 import com.google.inject.name.Named;
 import java.util.Collections;
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/event/EventDeserializerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/event/EventDeserializerTest.java
deleted file mode 100644
index 2b9ee35..0000000
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/event/EventDeserializerTest.java
+++ /dev/null
@@ -1,73 +0,0 @@
-// Copyright (C) 2020 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package com.ericsson.gerrit.plugins.highavailability.event;
-
-import static com.google.common.truth.Truth.assertThat;
-
-import com.ericsson.gerrit.plugins.highavailability.forwarder.rest.GsonProvider;
-import com.google.common.base.Supplier;
-import com.google.common.base.Suppliers;
-import com.google.gerrit.reviewdb.client.Project;
-import com.google.gerrit.server.data.AccountAttribute;
-import com.google.gerrit.server.data.RefUpdateAttribute;
-import com.google.gerrit.server.events.RefUpdatedEvent;
-import com.google.gson.Gson;
-import org.junit.Test;
-
-public class EventDeserializerTest {
-  private static final String LEGACY_PROJECT_KEY = "{\"name\": \"project\"}";
-
-  private static final String NEW_PROJECT_KEY = "\"project\"";
-
-  private final Gson gson = new GsonProvider().get();
-
-  @Test
-  public void deserializePatchSetCreatedEventLegacyProjectKey() {
-    Project.NameKey n = gson.fromJson(LEGACY_PROJECT_KEY, Project.NameKey.class);
-    assertThat(n.get()).isEqualTo("project");
-  }
-
-  @Test
-  public void deserializePatchSetCreatedEventNewProjectKey() {
-    Project.NameKey n = gson.fromJson(NEW_PROJECT_KEY, Project.NameKey.class);
-    assertThat(n.get()).isEqualTo("project");
-  }
-
-  @Test
-  public void refUpdatedEventRoundTrip() {
-    RefUpdatedEvent refUpdatedEvent = new RefUpdatedEvent();
-
-    RefUpdateAttribute refUpdatedAttribute = new RefUpdateAttribute();
-    refUpdatedAttribute.refName = "refs/heads/master";
-    refUpdatedEvent.refUpdate = createSupplier(refUpdatedAttribute);
-
-    AccountAttribute accountAttribute = new AccountAttribute();
-    accountAttribute.email = "some.user@domain.com";
-    refUpdatedEvent.submitter = createSupplier(accountAttribute);
-
-    String serializedEvent = gson.toJson(refUpdatedEvent);
-    RefUpdatedEvent e = gson.fromJson(serializedEvent, RefUpdatedEvent.class);
-
-    assertThat(e).isNotNull();
-    assertThat(e.refUpdate).isInstanceOf(Supplier.class);
-    assertThat(e.refUpdate.get().refName).isEqualTo(refUpdatedAttribute.refName);
-    assertThat(e.submitter).isInstanceOf(Supplier.class);
-    assertThat(e.submitter.get().email).isEqualTo(accountAttribute.email);
-  }
-
-  private static <T> Supplier<T> createSupplier(T value) {
-    return Suppliers.memoize(() -> value);
-  }
-}
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedCacheEvictionHandlerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedCacheEvictionHandlerTest.java
index 44bb1ea..e09adae 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedCacheEvictionHandlerTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedCacheEvictionHandlerTest.java
@@ -22,8 +22,8 @@
 
 import com.ericsson.gerrit.plugins.highavailability.cache.Constants;
 import com.google.common.cache.Cache;
+import com.google.gerrit.entities.Account;
 import com.google.gerrit.extensions.registration.DynamicMap;
-import com.google.gerrit.reviewdb.client.Account;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -55,7 +55,7 @@
 
   @Test
   public void testSuccessfulCacheEviction() throws Exception {
-    CacheEntry entry = new CacheEntry(Constants.GERRIT, Constants.ACCOUNTS, new Account.Id(123));
+    CacheEntry entry = new CacheEntry(Constants.GERRIT, Constants.ACCOUNTS, Account.id(123));
     doReturn(cacheMock).when(cacheMapMock).get(entry.getPluginName(), entry.getCacheName());
 
     handler.evict(entry);
@@ -73,7 +73,7 @@
 
   @Test
   public void shouldSetAndUnsetForwardedContext() throws Exception {
-    CacheEntry entry = new CacheEntry(Constants.GERRIT, Constants.ACCOUNTS, new Account.Id(456));
+    CacheEntry entry = new CacheEntry(Constants.GERRIT, Constants.ACCOUNTS, Account.id(456));
     doReturn(cacheMock).when(cacheMapMock).get(entry.getPluginName(), entry.getCacheName());
 
     // this doAnswer is to allow to assert that context is set to forwarded
@@ -96,7 +96,7 @@
 
   @Test
   public void shouldSetAndUnsetForwardedContextEvenIfExceptionIsThrown() throws Exception {
-    CacheEntry entry = new CacheEntry(Constants.GERRIT, Constants.ACCOUNTS, new Account.Id(789));
+    CacheEntry entry = new CacheEntry(Constants.GERRIT, Constants.ACCOUNTS, Account.id(789));
     doReturn(cacheMock).when(cacheMapMock).get(entry.getPluginName(), entry.getCacheName());
 
     doAnswer(
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedEventHandlerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedEventHandlerTest.java
index 8ef8e2f..3e1f8fd 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedEventHandlerTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedEventHandlerTest.java
@@ -15,7 +15,7 @@
 package com.ericsson.gerrit.plugins.highavailability.forwarder;
 
 import static com.google.common.truth.Truth.assertThat;
-import static org.junit.Assert.fail;
+import static com.google.gerrit.testing.GerritJUnit.assertThrows;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.verify;
 
@@ -82,12 +82,9 @@
         .postEvent(event);
 
     assertThat(Context.isForwardedEvent()).isFalse();
-    try {
-      handler.dispatch(event);
-      fail("should have throw a PermissionBackendException");
-    } catch (PermissionBackendException e) {
-      assertThat(e.getMessage()).isEqualTo("someMessage");
-    }
+    PermissionBackendException thrown =
+        assertThrows(PermissionBackendException.class, () -> handler.dispatch(event));
+    assertThat(thrown).hasMessageThat().isEqualTo("someMessage");
     assertThat(Context.isForwardedEvent()).isFalse();
 
     verify(dispatcherMock).postEvent(event);
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexAccountHandlerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexAccountHandlerTest.java
index 14f3d54..0e9cee8 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexAccountHandlerTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexAccountHandlerTest.java
@@ -16,12 +16,11 @@
 
 import static com.google.common.truth.Truth.assertThat;
 import static com.google.gerrit.testing.GerritJUnit.assertThrows;
-import static org.junit.Assert.fail;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.verify;
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexingHandler.Operation;
-import com.google.gerrit.reviewdb.client.Account;
+import com.google.gerrit.entities.Account;
 import com.google.gerrit.server.index.account.AccountIndexer;
 import java.io.IOException;
 import java.util.Optional;
@@ -42,7 +41,7 @@
   @Before
   public void setUp() throws Exception {
     handler = new ForwardedIndexAccountHandler(indexerMock);
-    id = new Account.Id(123);
+    id = Account.id(123);
   }
 
   @Test
@@ -92,12 +91,9 @@
         .index(id);
 
     assertThat(Context.isForwardedEvent()).isFalse();
-    try {
-      handler.index(id, Operation.INDEX, Optional.empty());
-      fail("should have thrown an IOException");
-    } catch (IOException e) {
-      assertThat(e.getMessage()).isEqualTo("someMessage");
-    }
+    IOException thrown =
+        assertThrows(IOException.class, () -> handler.index(id, Operation.INDEX, Optional.empty()));
+    assertThat(thrown).hasMessageThat().isEqualTo("someMessage");
     assertThat(Context.isForwardedEvent()).isFalse();
 
     verify(indexerMock).index(id);
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexChangeHandlerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexChangeHandlerTest.java
index a6da8e2..7c1e6df 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexChangeHandlerTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexChangeHandlerTest.java
@@ -15,7 +15,7 @@
 package com.ericsson.gerrit.plugins.highavailability.forwarder;
 
 import static com.google.common.truth.Truth.assertThat;
-import static org.junit.Assert.fail;
+import static com.google.gerrit.testing.GerritJUnit.assertThrows;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.times;
@@ -26,7 +26,7 @@
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexingHandler.Operation;
 import com.ericsson.gerrit.plugins.highavailability.index.ChangeChecker;
 import com.ericsson.gerrit.plugins.highavailability.index.ChangeCheckerImpl;
-import com.google.gerrit.reviewdb.client.Change;
+import com.google.gerrit.entities.Change;
 import com.google.gerrit.server.index.change.ChangeIndexer;
 import com.google.gerrit.server.notedb.ChangeNotes;
 import com.google.gerrit.server.util.OneOffRequestContext;
@@ -66,7 +66,7 @@
 
   @Before
   public void setUp() throws Exception {
-    id = new Change.Id(TEST_CHANGE_NUMBER);
+    id = Change.id(TEST_CHANGE_NUMBER);
     Change change = new Change(null, id, null, null, TimeUtil.nowTs());
     when(changeNotes.getChange()).thenReturn(change);
     when(configMock.index()).thenReturn(indexMock);
@@ -137,12 +137,11 @@
         .index(any(Change.class));
 
     assertThat(Context.isForwardedEvent()).isFalse();
-    try {
-      handler.index(TEST_CHANGE_ID, Operation.INDEX, Optional.empty());
-      fail("should have thrown an IOException");
-    } catch (IOException e) {
-      assertThat(e.getMessage()).isEqualTo("someMessage");
-    }
+    IOException thrown =
+        assertThrows(
+            IOException.class,
+            () -> handler.index(TEST_CHANGE_ID, Operation.INDEX, Optional.empty()));
+    assertThat(thrown).hasMessageThat().isEqualTo("someMessage");
     assertThat(Context.isForwardedEvent()).isFalse();
 
     verify(indexerMock, times(1)).index(any(Change.class));
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexGroupHandlerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexGroupHandlerTest.java
index 7e30dea..5fdb151 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexGroupHandlerTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexGroupHandlerTest.java
@@ -16,12 +16,11 @@
 
 import static com.google.common.truth.Truth.assertThat;
 import static com.google.gerrit.testing.GerritJUnit.assertThrows;
-import static org.junit.Assert.fail;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.verify;
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexingHandler.Operation;
-import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.entities.AccountGroup;
 import com.google.gerrit.server.index.group.GroupIndexer;
 import java.io.IOException;
 import java.util.Optional;
@@ -42,7 +41,7 @@
   @Before
   public void setUp() throws Exception {
     handler = new ForwardedIndexGroupHandler(indexerMock);
-    uuid = new AccountGroup.UUID("123");
+    uuid = AccountGroup.uuid("123");
   }
 
   @Test
@@ -92,12 +91,10 @@
         .index(uuid);
 
     assertThat(Context.isForwardedEvent()).isFalse();
-    try {
-      handler.index(uuid, Operation.INDEX, Optional.empty());
-      fail("should have thrown an IOException");
-    } catch (IOException e) {
-      assertThat(e.getMessage()).isEqualTo("someMessage");
-    }
+    IOException thrown =
+        assertThrows(
+            IOException.class, () -> handler.index(uuid, Operation.INDEX, Optional.empty()));
+    assertThat(thrown).hasMessageThat().isEqualTo("someMessage");
     assertThat(Context.isForwardedEvent()).isFalse();
 
     verify(indexerMock).index(uuid);
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexProjectHandlerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexProjectHandlerTest.java
index ea36532..0c896b3 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexProjectHandlerTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexProjectHandlerTest.java
@@ -16,13 +16,12 @@
 
 import static com.google.common.truth.Truth.assertThat;
 import static com.google.gerrit.testing.GerritJUnit.assertThrows;
-import static org.junit.Assert.fail;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.verify;
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexingHandler.Operation;
+import com.google.gerrit.entities.Project;
 import com.google.gerrit.index.project.ProjectIndexer;
-import com.google.gerrit.reviewdb.client.Project;
 import java.io.IOException;
 import java.util.Optional;
 import org.junit.Before;
@@ -42,7 +41,7 @@
   @Before
   public void setUp() {
     handler = new ForwardedIndexProjectHandler(indexerMock);
-    nameKey = new Project.NameKey("project/name");
+    nameKey = Project.nameKey("project/name");
   }
 
   @Test
@@ -92,12 +91,10 @@
         .index(nameKey);
 
     assertThat(Context.isForwardedEvent()).isFalse();
-    try {
-      handler.index(nameKey, Operation.INDEX, Optional.empty());
-      fail("should have thrown an IOException");
-    } catch (IOException e) {
-      assertThat(e.getMessage()).isEqualTo("someMessage");
-    }
+    IOException thrown =
+        assertThrows(
+            IOException.class, () -> handler.index(nameKey, Operation.INDEX, Optional.empty()));
+    assertThat(thrown).hasMessageThat().isEqualTo("someMessage");
     assertThat(Context.isForwardedEvent()).isFalse();
 
     verify(indexerMock).index(nameKey);
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedProjectListUpdateHandlerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedProjectListUpdateHandlerTest.java
index f5521c5..2067265 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedProjectListUpdateHandlerTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedProjectListUpdateHandlerTest.java
@@ -19,7 +19,7 @@
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.verify;
 
-import com.google.gerrit.reviewdb.client.Project;
+import com.google.gerrit.entities.Project;
 import com.google.gerrit.server.project.ProjectCache;
 import org.junit.Before;
 import org.junit.Test;
@@ -33,7 +33,7 @@
 
   private static final String PROJECT_NAME = "someProject";
   private static final String SOME_MESSAGE = "someMessage";
-  private static final Project.NameKey PROJECT_KEY = new Project.NameKey(PROJECT_NAME);
+  private static final Project.NameKey PROJECT_KEY = Project.nameKey(PROJECT_NAME);
   @Mock private ProjectCache projectCacheMock;
   private ForwardedProjectListUpdateHandler handler;
 
@@ -108,7 +108,7 @@
     assertThat(Context.isForwardedEvent()).isFalse();
     RuntimeException thrown =
         assertThrows(RuntimeException.class, () -> handler.update(PROJECT_NAME, false));
-    assertThat(thrown).hasMessageThat().contains(SOME_MESSAGE);
+    assertThat(thrown).hasMessageThat().isEqualTo(SOME_MESSAGE);
     assertThat(Context.isForwardedEvent()).isFalse();
 
     verify(projectCacheMock).onCreateProject(PROJECT_KEY);
@@ -128,7 +128,7 @@
     assertThat(Context.isForwardedEvent()).isFalse();
     RuntimeException thrown =
         assertThrows(RuntimeException.class, () -> handler.update(PROJECT_NAME, true));
-    assertThat(thrown).hasMessageThat().contains(SOME_MESSAGE);
+    assertThat(thrown).hasMessageThat().isEqualTo(SOME_MESSAGE);
     assertThat(Context.isForwardedEvent()).isFalse();
 
     verify(projectCacheMock).remove(PROJECT_KEY);
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/CacheRestApiServletTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/CacheRestApiServletTest.java
index 8b08d24..44dd7f0 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/CacheRestApiServletTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/CacheRestApiServletTest.java
@@ -24,6 +24,7 @@
 import com.ericsson.gerrit.plugins.highavailability.cache.Constants;
 import com.ericsson.gerrit.plugins.highavailability.forwarder.CacheNotFoundException;
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedCacheEvictionHandler;
+import com.google.gson.Gson;
 import java.io.BufferedReader;
 import java.io.IOException;
 import javax.servlet.http.HttpServletRequest;
@@ -45,8 +46,7 @@
   @Before
   public void setUp() {
     servlet =
-        new CacheRestApiServlet(
-            forwardedCacheEvictionHandlerMock, new GsonParser(new GsonProvider()));
+        new CacheRestApiServlet(forwardedCacheEvictionHandlerMock, new GsonParser(new Gson()));
   }
 
   @Test
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/EventRestApiServletTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/EventRestApiServletTest.java
index 7872785..3c6b931 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/EventRestApiServletTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/EventRestApiServletTest.java
@@ -25,10 +25,12 @@
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedEventHandler;
 import com.google.common.net.MediaType;
-import com.google.gerrit.reviewdb.client.Project;
+import com.google.gerrit.entities.Project;
+import com.google.gerrit.server.events.EventGsonProvider;
 import com.google.gerrit.server.events.EventTypes;
 import com.google.gerrit.server.events.RefEvent;
 import com.google.gerrit.server.permissions.PermissionBackendException;
+import com.google.gson.Gson;
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.StringReader;
@@ -49,6 +51,7 @@
   @Mock private HttpServletRequest requestMock;
   @Mock private HttpServletResponse responseMock;
   private EventRestApiServlet eventRestApiServlet;
+  private Gson gson = new EventGsonProvider().get();
 
   @BeforeClass
   public static void setup() {
@@ -57,7 +60,7 @@
 
   @Before
   public void createEventsRestApiServlet() throws Exception {
-    eventRestApiServlet = new EventRestApiServlet(forwardedEventHandlerMock, new GsonProvider());
+    eventRestApiServlet = new EventRestApiServlet(forwardedEventHandlerMock, gson);
     when(requestMock.getContentType()).thenReturn(MediaType.JSON_UTF_8.toString());
   }
 
@@ -129,7 +132,7 @@
 
     @Override
     public Project.NameKey getProjectNameKey() {
-      return new Project.NameKey(project);
+      return Project.nameKey(project);
     }
 
     @Override
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/GsonParserTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/GsonParserTest.java
index 2f6ce7e..5b76598 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/GsonParserTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/GsonParserTest.java
@@ -17,33 +17,34 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import com.ericsson.gerrit.plugins.highavailability.cache.Constants;
-import com.google.gerrit.reviewdb.client.Account;
-import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.entities.Account;
+import com.google.gerrit.entities.AccountGroup;
+import com.google.gerrit.server.events.EventGsonProvider;
 import com.google.gson.Gson;
 import org.junit.Test;
 
 public class GsonParserTest {
   private static final Object EMPTY_JSON = "{}";
-  private final Gson gson = new Gson();
-  private final GsonParser objectUnderTest = new GsonParser(new GsonProvider());
+  private final Gson gson = new EventGsonProvider().get();
+  private final GsonParser objectUnderTest = new GsonParser(gson);
 
   @Test
   public void accountIDParse() {
-    Account.Id accountId = new Account.Id(1);
+    Account.Id accountId = Account.id(1);
     String json = gson.toJson(accountId);
     assertThat(accountId).isEqualTo(objectUnderTest.fromJson(Constants.ACCOUNTS, json));
   }
 
   @Test
   public void accountGroupIDParse() {
-    AccountGroup.Id accountGroupId = new AccountGroup.Id(1);
+    AccountGroup.Id accountGroupId = AccountGroup.id(1);
     String json = gson.toJson(accountGroupId);
     assertThat(accountGroupId).isEqualTo(objectUnderTest.fromJson(Constants.GROUPS, json));
   }
 
   @Test
   public void accountGroupUUIDParse() {
-    AccountGroup.UUID accountGroupUuid = new AccountGroup.UUID("abc123");
+    AccountGroup.UUID accountGroupUuid = AccountGroup.uuid("abc123");
     String json = gson.toJson(accountGroupUuid);
     assertThat(accountGroupUuid)
         .isEqualTo(objectUnderTest.fromJson(Constants.GROUPS_BYINCLUDE, json));
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/HttpSessionTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/HttpSessionTest.java
index 4071363..1edcd43 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/HttpSessionTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/HttpSessionTest.java
@@ -28,7 +28,7 @@
 import com.github.tomakehurst.wiremock.http.Fault;
 import com.github.tomakehurst.wiremock.junit.WireMockRule;
 import com.github.tomakehurst.wiremock.stubbing.Scenario;
-import com.google.gerrit.reviewdb.client.Project;
+import com.google.gson.Gson;
 import java.net.SocketTimeoutException;
 import org.junit.Before;
 import org.junit.Rule;
@@ -71,7 +71,7 @@
     when(configMock.http().socketTimeout()).thenReturn(TIMEOUT);
     when(configMock.http().retryInterval()).thenReturn(RETRY_INTERVAL);
 
-    httpSession = new HttpSession(new HttpClientProvider(configMock).get(), new GsonProvider());
+    httpSession = new HttpSession(new HttpClientProvider(configMock).get(), new Gson());
   }
 
   @Test
@@ -171,12 +171,4 @@
 
     assertThat(httpSession.post(uri).isSuccessful()).isFalse();
   }
-
-  @Test
-  public void encodeProjectName() {
-    String projectStr = "project";
-    Project.NameKey project = Project.nameKey(projectStr);
-    String json = httpSession.jsonEncode(project);
-    assertThat(json).isEqualTo("\"" + projectStr + "\"");
-  }
 }
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexAccountRestApiServletTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexAccountRestApiServletTest.java
index 4622a17..83102a9 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexAccountRestApiServletTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexAccountRestApiServletTest.java
@@ -26,7 +26,7 @@
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexAccountHandler;
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexingHandler.Operation;
-import com.google.gerrit.reviewdb.client.Account;
+import com.google.gerrit.entities.Account;
 import java.io.IOException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -51,7 +51,7 @@
   @Before
   public void setUpMocks() {
     servlet = new IndexAccountRestApiServlet(handlerMock);
-    id = new Account.Id(ACCOUNT_NUMBER);
+    id = Account.id(ACCOUNT_NUMBER);
     when(requestMock.getRequestURI())
         .thenReturn("http://gerrit.com/index/account/" + ACCOUNT_NUMBER);
   }
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexChangeRestApiServletTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexChangeRestApiServletTest.java
index fb3649e..3da35d4 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexChangeRestApiServletTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexChangeRestApiServletTest.java
@@ -25,6 +25,7 @@
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexChangeHandler;
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexingHandler.Operation;
+import com.google.gson.Gson;
 import java.io.IOException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -50,7 +51,7 @@
 
   @Before
   public void setUpMocks() {
-    servlet = new IndexChangeRestApiServlet(handlerMock);
+    servlet = new IndexChangeRestApiServlet(handlerMock, new Gson());
     when(requestMock.getRequestURI())
         .thenReturn("http://gerrit.com/index/change/" + PROJECT_NAME_URL_ENC + "~" + CHANGE_NUMBER);
   }
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexGroupRestApiServletTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexGroupRestApiServletTest.java
index 6291142..fb5788d 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexGroupRestApiServletTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexGroupRestApiServletTest.java
@@ -26,7 +26,7 @@
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexGroupHandler;
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexingHandler.Operation;
-import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.entities.AccountGroup;
 import java.io.IOException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -51,7 +51,7 @@
   @Before
   public void setUpMocks() {
     servlet = new IndexGroupRestApiServlet(handlerMock);
-    uuid = new AccountGroup.UUID(UUID);
+    uuid = AccountGroup.uuid(UUID);
     when(requestMock.getRequestURI()).thenReturn("http://gerrit.com/index/group/" + UUID);
   }
 
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexProjectRestApiServletTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexProjectRestApiServletTest.java
index 83420b9..da6e70d 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexProjectRestApiServletTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/IndexProjectRestApiServletTest.java
@@ -26,8 +26,8 @@
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexProjectHandler;
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedIndexingHandler.Operation;
+import com.google.gerrit.entities.Project;
 import com.google.gerrit.extensions.restapi.Url;
-import com.google.gerrit.reviewdb.client.Project;
 import java.io.IOException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -52,7 +52,7 @@
   @Before
   public void setUpMocks() {
     servlet = new IndexProjectRestApiServlet(handlerMock);
-    nameKey = new Project.NameKey(PROJECT_NAME);
+    nameKey = Project.nameKey(PROJECT_NAME);
     when(requestMock.getRequestURI())
         .thenReturn("http://gerrit.com/index/project/" + Url.encode(nameKey.get()));
   }
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/ProjectListRestApiServletIT.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/ProjectListRestApiServletIT.java
index 55aa2c9..11ae77d 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/ProjectListRestApiServletIT.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/ProjectListRestApiServletIT.java
@@ -20,8 +20,8 @@
 import com.google.gerrit.acceptance.NoHttpd;
 import com.google.gerrit.acceptance.TestPlugin;
 import com.google.gerrit.acceptance.UseLocalDisk;
+import com.google.gerrit.entities.Project;
 import com.google.gerrit.extensions.restapi.Url;
-import com.google.gerrit.reviewdb.client.Project;
 import org.junit.Test;
 
 @NoHttpd
@@ -30,7 +30,7 @@
     sysModule = "com.ericsson.gerrit.plugins.highavailability.Module",
     httpModule = "com.ericsson.gerrit.plugins.highavailability.HttpModule")
 public class ProjectListRestApiServletIT extends LightweightPluginDaemonTest {
-  private static final Project.NameKey SOME_PROJECT = new Project.NameKey("org-a/some-project");
+  private static final Project.NameKey SOME_PROJECT = Project.nameKey("org-a/some-project");
 
   @Test
   @UseLocalDisk
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/RestForwarderTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/RestForwarderTest.java
index cb90461..7908669 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/RestForwarderTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/RestForwarderTest.java
@@ -30,8 +30,8 @@
 import com.ericsson.gerrit.plugins.highavailability.peers.PeerInfo;
 import com.google.common.base.Joiner;
 import com.google.common.collect.ImmutableSet;
-import com.google.gerrit.reviewdb.client.Account;
-import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.entities.Account;
+import com.google.gerrit.entities.AccountGroup;
 import com.google.gerrit.server.events.Event;
 import com.google.gson.Gson;
 import com.google.inject.Provider;
@@ -85,9 +85,6 @@
   private static final String INDEX_GROUP_ENDPOINT =
       Joiner.on("/").join(URL, PLUGINS, PLUGIN_NAME, "index/group", UUID);
 
-  private GsonProvider gsonProvider = new GsonProvider();
-  private Gson gson = gsonProvider.get();
-
   // Event
   private static Event event = new TestEvent();
   private static final String EVENT_ENDPOINT =
@@ -98,6 +95,7 @@
 
   private RestForwarder forwarder;
   private HttpSession httpSessionMock;
+  private Gson gson = new Gson();
   private Configuration configMock;
   Provider<Set<PeerInfo>> peersMock;
 
@@ -116,7 +114,7 @@
             PLUGIN_NAME,
             configMock,
             peersMock,
-            gsonProvider, // TODO: Create provider
+            gson, // TODO: Create provider
             new RestForwarderScheduler(Executors.newScheduledThreadPool(1)));
   }
 
@@ -293,7 +291,7 @@
 
   @Test
   public void testEvictAccountsOK() throws Exception {
-    Account.Id key = new Account.Id(123);
+    Account.Id key = Account.id(123);
     String keyJson = gson.toJson(key);
     when(httpSessionMock.post(buildCacheEndpoint(Constants.ACCOUNTS), keyJson))
         .thenReturn(new HttpResult(SUCCESSFUL, EMPTY_MSG));
@@ -303,7 +301,7 @@
 
   @Test
   public void testEvictGroupsOK() throws Exception {
-    AccountGroup.Id key = new AccountGroup.Id(123);
+    AccountGroup.Id key = AccountGroup.id(123);
     String keyJson = gson.toJson(key);
     String endpoint = buildCacheEndpoint(Constants.GROUPS);
     when(httpSessionMock.post(endpoint, keyJson)).thenReturn(new HttpResult(SUCCESSFUL, EMPTY_MSG));
@@ -313,7 +311,7 @@
 
   @Test
   public void testEvictGroupsByIncludeOK() throws Exception {
-    AccountGroup.UUID key = new AccountGroup.UUID("90b3042d9094a37985f3f9281391dbbe9a5addad");
+    AccountGroup.UUID key = AccountGroup.uuid("90b3042d9094a37985f3f9281391dbbe9a5addad");
     String keyJson = gson.toJson(key);
     when(httpSessionMock.post(buildCacheEndpoint(Constants.GROUPS_BYINCLUDE), keyJson))
         .thenReturn(new HttpResult(SUCCESSFUL, EMPTY_MSG));
@@ -324,7 +322,7 @@
 
   @Test
   public void testEvictGroupsMembersOK() throws Exception {
-    AccountGroup.UUID key = new AccountGroup.UUID("90b3042d9094a37985f3f9281391dbbe9a5addad");
+    AccountGroup.UUID key = AccountGroup.uuid("90b3042d9094a37985f3f9281391dbbe9a5addad");
     String keyJson = gson.toJson(key);
     when(httpSessionMock.post(buildCacheEndpoint(Constants.GROUPS_MEMBERS), keyJson))
         .thenReturn(new HttpResult(SUCCESSFUL, EMPTY_MSG));
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerIT.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerIT.java
index bc5210d..febf8f0 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerIT.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerIT.java
@@ -20,7 +20,7 @@
 import com.google.gerrit.acceptance.LightweightPluginDaemonTest;
 import com.google.gerrit.acceptance.PushOneCommit.Result;
 import com.google.gerrit.acceptance.TestPlugin;
-import com.google.gerrit.reviewdb.client.RefNames;
+import com.google.gerrit.entities.RefNames;
 import java.io.IOException;
 import java.util.Optional;
 import org.eclipse.jgit.lib.Ref;
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/IndexEventHandlerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/IndexEventHandlerTest.java
index 5f08cc5..578dc17 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/IndexEventHandlerTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/index/IndexEventHandlerTest.java
@@ -35,9 +35,9 @@
 import com.ericsson.gerrit.plugins.highavailability.index.IndexEventHandler.IndexGroupTask;
 import com.ericsson.gerrit.plugins.highavailability.index.IndexEventHandler.IndexTask;
 import com.ericsson.gerrit.plugins.highavailability.index.IndexEventLocks.VoidFunction;
-import com.google.gerrit.reviewdb.client.Account;
-import com.google.gerrit.reviewdb.client.AccountGroup;
-import com.google.gerrit.reviewdb.client.Change;
+import com.google.gerrit.entities.Account;
+import com.google.gerrit.entities.AccountGroup;
+import com.google.gerrit.entities.Change;
 import com.google.gerrit.server.util.OneOffRequestContext;
 import com.google.gerrit.server.util.RequestContext;
 import com.google.gerrit.server.util.ThreadLocalRequestContext;
@@ -102,9 +102,9 @@
 
   @Before
   public void setUpMocks() throws Exception {
-    changeId = new Change.Id(CHANGE_ID);
-    accountId = new Account.Id(ACCOUNT_ID);
-    accountGroupUUID = new AccountGroup.UUID(UUID);
+    changeId = Change.id(CHANGE_ID);
+    accountId = Account.id(ACCOUNT_ID);
+    accountGroupUUID = AccountGroup.uuid(UUID);
     when(changeCheckerFactoryMock.create(any())).thenReturn(changeCheckerMock);
     when(changeCheckerMock.newIndexEvent()).thenReturn(Optional.of(new IndexEvent()));