diff --git a/WORKSPACE b/WORKSPACE
index 866d853..eb65a79 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,27 +3,27 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "51049da0140c58ee26f8285bca4393c5e43ce4a1",
+    commit = "d826d85285bb22d3fe817fe165a7e1d3472f65fa",
     #local_path = "/home/<user>/projects/bazlets",
 )
 
 # Snapshot Plugin API
-#load(
-#    "@com_googlesource_gerrit_bazlets//:gerrit_api_maven_local.bzl",
-#    "gerrit_api_maven_local",
-#)
-
-# Load snapshot Plugin API
-#gerrit_api_maven_local()
-
-# Release Plugin API
 load(
-    "@com_googlesource_gerrit_bazlets//:gerrit_api.bzl",
-    "gerrit_api",
+    "@com_googlesource_gerrit_bazlets//:gerrit_api_maven_local.bzl",
+    "gerrit_api_maven_local",
 )
 
+# Load snapshot Plugin API
+gerrit_api_maven_local()
+
+# Release Plugin API
+#load(
+#    "@com_googlesource_gerrit_bazlets//:gerrit_api.bzl",
+#    "gerrit_api",
+#)
+
 # Load release Plugin API
-gerrit_api()
+#gerrit_api()
 
 load("//:external_plugin_deps.bzl", "external_plugin_deps")
 
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 fe5f591..58f31d9 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
@@ -146,7 +146,7 @@
   }
 
   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/ForwardedProjectListUpdateHandler.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedProjectListUpdateHandler.java
index 84f4675..73cd28d 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
@@ -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/CacheRestApiServlet.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/CacheRestApiServlet.java
index ffc05a5..60e782f 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/CacheRestApiServlet.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/forwarder/rest/CacheRestApiServlet.java
@@ -34,10 +34,13 @@
   private static final long serialVersionUID = -1L;
 
   private final ForwardedCacheEvictionHandler forwardedCacheEvictionHandler;
+  private final GsonParser gson;
 
   @Inject
-  CacheRestApiServlet(ForwardedCacheEvictionHandler forwardedCacheEvictionHandler) {
+  CacheRestApiServlet(
+      ForwardedCacheEvictionHandler forwardedCacheEvictionHandler, GsonParser gson) {
     this.forwardedCacheEvictionHandler = forwardedCacheEvictionHandler;
+    this.gson = gson;
   }
 
   @Override
@@ -48,7 +51,7 @@
       String cacheName = params.get(CACHENAME_INDEX);
       String json = req.getReader().readLine();
       forwardedCacheEvictionHandler.evict(
-          CacheEntry.from(cacheName, GsonParser.fromJson(cacheName, json)));
+          CacheEntry.from(cacheName, gson.fromJson(cacheName, json)));
       rsp.setStatus(SC_NO_CONTENT);
     } catch (CacheNotFoundException e) {
       log.atSevere().log("Failed to process eviction request: %s", e.getMessage());
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 e259ff5..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
@@ -20,15 +20,12 @@
 import static javax.servlet.http.HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE;
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.ForwardedEventHandler;
-import com.google.common.base.Supplier;
 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.EventDeserializer;
-import com.google.gerrit.server.events.SupplierDeserializer;
+import com.google.gerrit.server.events.EventGson;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import java.io.IOException;
@@ -40,10 +37,12 @@
   private static final long serialVersionUID = -1L;
 
   private final ForwardedEventHandler forwardedEventHandler;
+  private final Gson gson;
 
   @Inject
-  EventRestApiServlet(ForwardedEventHandler forwardedEventHandler) {
+  EventRestApiServlet(ForwardedEventHandler forwardedEventHandler, @EventGson Gson gson) {
     this.forwardedEventHandler = forwardedEventHandler;
+    this.gson = gson;
   }
 
   @Override
@@ -62,13 +61,8 @@
     }
   }
 
-  private static Event getEventFromRequest(HttpServletRequest req) throws IOException {
+  private Event getEventFromRequest(HttpServletRequest req) throws IOException {
     String jsonEvent = CharStreams.toString(req.getReader());
-    Gson gson =
-        new GsonBuilder()
-            .registerTypeAdapter(Event.class, new EventDeserializer())
-            .registerTypeAdapter(Supplier.class, new SupplierDeserializer())
-            .create();
     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 974f20b..90d9184 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
@@ -18,60 +18,54 @@
 import com.google.common.base.Strings;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.server.events.EventGson;
 import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
 
-final class GsonParser {
+@Singleton
+class GsonParser {
+  private final Gson gson;
 
-  private GsonParser() {}
+  @Inject
+  public GsonParser(@EventGson Gson gson) {
+    this.gson = gson;
+  }
 
-  static Object fromJson(String cacheName, String json) {
-    Gson gson = new GsonBuilder().create();
+  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;
   }
-
-  static String toJson(String cacheName, Object key) {
-    Gson gson = new GsonBuilder().create();
-    String json;
-    // Need to add a case for 'adv_bases'
-    switch (cacheName) {
-      case Constants.ACCOUNTS:
-        json = gson.toJson(key, Account.Id.class);
-        break;
-      case Constants.GROUPS:
-        json = gson.toJson(key, AccountGroup.Id.class);
-        break;
-      case Constants.GROUPS_BYINCLUDE:
-      case Constants.GROUPS_MEMBERS:
-        json = gson.toJson(key, AccountGroup.UUID.class);
-        break;
-      case Constants.PROJECT_LIST:
-      default:
-        json = gson.toJson(key);
-    }
-    return json;
-  }
 }
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 f2ac080..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
@@ -15,11 +15,9 @@
 package com.ericsson.gerrit.plugins.highavailability.forwarder.rest;
 
 import com.ericsson.gerrit.plugins.highavailability.forwarder.rest.HttpResponseHandler.HttpResult;
-import com.google.common.base.Supplier;
 import com.google.common.net.MediaType;
-import com.google.gerrit.server.events.SupplierSerializer;
+import com.google.gerrit.server.events.EventGson;
 import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
 import com.google.inject.Inject;
 import java.io.IOException;
 import java.net.URI;
@@ -32,12 +30,12 @@
 
 class HttpSession {
   private final CloseableHttpClient httpClient;
-  private final Gson gson =
-      new GsonBuilder().registerTypeAdapter(Supplier.class, new SupplierSerializer()).create();
+  private final Gson gson;
 
   @Inject
-  HttpSession(CloseableHttpClient httpClient) {
+  HttpSession(CloseableHttpClient httpClient, @EventGson Gson gson) {
     this.httpClient = httpClient;
+    this.gson = gson;
   }
 
   HttpResult post(String uri) throws IOException {
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..4f71eaf 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
@@ -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/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..85f6a32 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
@@ -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..9ea6d63 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
@@ -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 044fce0..3ab9878 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;
@@ -48,17 +50,20 @@
   private final String pluginRelativePath;
   private final Configuration cfg;
   private final Provider<Set<PeerInfo>> peerInfoProvider;
+  private final Gson gson;
 
   @Inject
   RestForwarder(
       HttpSession httpClient,
       @PluginName String pluginName,
       Configuration cfg,
-      Provider<Set<PeerInfo>> peerInfoProvider) {
+      Provider<Set<PeerInfo>> peerInfoProvider,
+      @EventGson Gson gson) {
     this.httpSession = httpClient;
     this.pluginRelativePath = Joiner.on("/").join("plugins", pluginName);
     this.cfg = cfg;
     this.peerInfoProvider = peerInfoProvider;
+    this.gson = gson;
   }
 
   @Override
@@ -109,7 +114,7 @@
 
   @Override
   public boolean evict(final String cacheName, final Object key) {
-    String json = GsonParser.toJson(cacheName, 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 f88e10b..ead3f0d 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
@@ -123,7 +123,7 @@
 
   private String getBranchTargetSha() {
     try (Repository repo = gitRepoMgr.openRepository(changeNotes.get().getProjectName())) {
-      String refName = changeNotes.get().getChange().getDest().get();
+      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/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedCacheEvictionHandlerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedCacheEvictionHandlerTest.java
index 3426b05..dfcdf90 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
@@ -57,7 +57,7 @@
 
   @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);
@@ -75,7 +75,7 @@
 
   @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
@@ -98,7 +98,7 @@
 
   @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/ForwardedIndexAccountHandlerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/forwarder/ForwardedIndexAccountHandlerTest.java
index c2d3659..43e5d9e 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
@@ -50,7 +50,7 @@
     when(configMock.index()).thenReturn(indexMock);
     when(indexMock.numStripedLocks()).thenReturn(10);
     handler = new ForwardedIndexAccountHandler(indexerMock, configMock);
-    id = new Account.Id(123);
+    id = Account.id(123);
   }
 
   @Test
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 df1bdac..e5349b8 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
@@ -69,7 +69,7 @@
 
   @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);
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 ab55b73..f476773 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
@@ -50,7 +50,7 @@
     when(configMock.index()).thenReturn(indexMock);
     when(indexMock.numStripedLocks()).thenReturn(10);
     handler = new ForwardedIndexGroupHandler(indexerMock, configMock);
-    uuid = new AccountGroup.UUID("123");
+    uuid = AccountGroup.uuid("123");
   }
 
   @Test
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 ea64d71..2516fea 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
@@ -50,7 +50,7 @@
     when(configMock.index()).thenReturn(indexMock);
     when(indexMock.numStripedLocks()).thenReturn(10);
     handler = new ForwardedIndexProjectHandler(indexerMock, configMock);
-    nameKey = new Project.NameKey("project/name");
+    nameKey = Project.nameKey("project/name");
   }
 
   @Test
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 3ee8581..6329a12 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
@@ -35,7 +35,7 @@
 
   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);
   @Rule public ExpectedException exception = ExpectedException.none();
   @Mock private ProjectCache projectCacheMock;
   private ForwardedProjectListUpdateHandler handler;
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 29f63fd..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;
@@ -44,7 +45,8 @@
 
   @Before
   public void setUp() {
-    servlet = new CacheRestApiServlet(forwardedCacheEvictionHandlerMock);
+    servlet =
+        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 1415dba..884cec5 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
@@ -26,9 +26,11 @@
 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.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);
+    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 b4f4dac..88c638d 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
@@ -19,43 +19,48 @@
 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.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 EventGsonProvider().get();
+  private final GsonParser objectUnderTest = new GsonParser(gson);
 
   @Test
   public void accountIDParse() {
-    Account.Id accountId = new Account.Id(1);
-    String json = GsonParser.toJson(Constants.ACCOUNTS, accountId);
-    assertThat(accountId).isEqualTo(GsonParser.fromJson(Constants.ACCOUNTS, json));
+    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);
-    String json = GsonParser.toJson(Constants.GROUPS, accountGroupId);
-    assertThat(accountGroupId).isEqualTo(GsonParser.fromJson(Constants.GROUPS, json));
+    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");
-    String json = GsonParser.toJson(Constants.GROUPS_BYINCLUDE, accountGroupUuid);
-    assertThat(accountGroupUuid).isEqualTo(GsonParser.fromJson(Constants.GROUPS_BYINCLUDE, json));
+    AccountGroup.UUID accountGroupUuid = AccountGroup.uuid("abc123");
+    String json = gson.toJson(accountGroupUuid);
+    assertThat(accountGroupUuid)
+        .isEqualTo(objectUnderTest.fromJson(Constants.GROUPS_BYINCLUDE, json));
   }
 
   @Test
   public void stringParse() {
     String key = "key";
-    String json = GsonParser.toJson(Constants.PROJECTS, key);
-    assertThat(key).isEqualTo(GsonParser.fromJson(Constants.PROJECTS, json));
+    String json = gson.toJson(key);
+    assertThat(key).isEqualTo(objectUnderTest.fromJson(Constants.PROJECTS, json));
   }
 
   @Test
   public void noKeyParse() {
     Object object = new Object();
-    String json = GsonParser.toJson(Constants.PROJECT_LIST, object);
+    String json = gson.toJson(object);
     assertThat(json).isEqualTo(EMPTY_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 5e0d4c9..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
@@ -28,6 +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.gson.Gson;
 import java.net.SocketTimeoutException;
 import org.junit.Before;
 import org.junit.Rule;
@@ -70,7 +71,7 @@
     when(configMock.http().socketTimeout()).thenReturn(TIMEOUT);
     when(configMock.http().retryInterval()).thenReturn(RETRY_INTERVAL);
 
-    httpSession = new HttpSession(new HttpClientProvider(configMock).get());
+    httpSession = new HttpSession(new HttpClientProvider(configMock).get(), new Gson());
   }
 
   @Test
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..bb617fc 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
@@ -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..e330d8c 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
@@ -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..aefb8c8 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
@@ -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..3ad5219 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
@@ -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 d516d09..815e3e9 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
@@ -33,7 +33,7 @@
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.server.events.Event;
-import com.google.gson.GsonBuilder;
+import com.google.gson.Gson;
 import com.google.inject.Provider;
 import java.io.IOException;
 import java.util.Set;
@@ -82,6 +82,7 @@
 
   private RestForwarder forwarder;
   private HttpSession httpSessionMock;
+  private Gson gson = new Gson();
 
   @SuppressWarnings("unchecked")
   @Before
@@ -94,7 +95,7 @@
     when(peersMock.get()).thenReturn(ImmutableSet.of(new PeerInfo(URL)));
     forwarder =
         new RestForwarder(
-            httpSessionMock, PLUGIN_NAME, configMock, peersMock); // TODO: Create provider
+            httpSessionMock, PLUGIN_NAME, configMock, peersMock, gson); // TODO: Create provider
   }
 
   @Test
@@ -199,7 +200,7 @@
   @Test
   public void testEvictProjectOK() throws Exception {
     String key = PROJECT_NAME;
-    String keyJson = new GsonBuilder().create().toJson(key);
+    String keyJson = gson.toJson(key);
     when(httpSessionMock.post(buildCacheEndpoint(Constants.PROJECTS), keyJson))
         .thenReturn(new HttpResult(SUCCESSFUL, EMPTY_MSG));
     assertThat(forwarder.evict(Constants.PROJECTS, key)).isTrue();
@@ -207,8 +208,8 @@
 
   @Test
   public void testEvictAccountsOK() throws Exception {
-    Account.Id key = new Account.Id(123);
-    String keyJson = new GsonBuilder().create().toJson(key);
+    Account.Id key = Account.id(123);
+    String keyJson = gson.toJson(key);
     when(httpSessionMock.post(buildCacheEndpoint(Constants.ACCOUNTS), keyJson))
         .thenReturn(new HttpResult(SUCCESSFUL, EMPTY_MSG));
     assertThat(forwarder.evict(Constants.ACCOUNTS, key)).isTrue();
@@ -216,8 +217,8 @@
 
   @Test
   public void testEvictGroupsOK() throws Exception {
-    AccountGroup.Id key = new AccountGroup.Id(123);
-    String keyJson = new GsonBuilder().create().toJson(key);
+    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));
     assertThat(forwarder.evict(Constants.GROUPS, key)).isTrue();
@@ -225,8 +226,8 @@
 
   @Test
   public void testEvictGroupsByIncludeOK() throws Exception {
-    AccountGroup.UUID key = new AccountGroup.UUID("90b3042d9094a37985f3f9281391dbbe9a5addad");
-    String keyJson = new GsonBuilder().create().toJson(key);
+    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));
     assertThat(forwarder.evict(Constants.GROUPS_BYINCLUDE, key)).isTrue();
@@ -234,8 +235,8 @@
 
   @Test
   public void testEvictGroupsMembersOK() throws Exception {
-    AccountGroup.UUID key = new AccountGroup.UUID("90b3042d9094a37985f3f9281391dbbe9a5addad");
-    String keyJson = new GsonBuilder().create().toJson(key);
+    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));
     assertThat(forwarder.evict(Constants.GROUPS_MEMBERS, key)).isTrue();
@@ -244,7 +245,7 @@
   @Test
   public void testEvictCacheFailed() throws Exception {
     String key = PROJECT_NAME;
-    String keyJson = new GsonBuilder().create().toJson(key);
+    String keyJson = gson.toJson(key);
     when(httpSessionMock.post(buildCacheEndpoint(Constants.PROJECTS), keyJson))
         .thenReturn(new HttpResult(FAILED, EMPTY_MSG));
     assertThat(forwarder.evict(Constants.PROJECTS, key)).isFalse();
@@ -253,7 +254,7 @@
   @Test
   public void testEvictCacheThrowsException() throws Exception {
     String key = PROJECT_NAME;
-    String keyJson = new GsonBuilder().create().toJson(key);
+    String keyJson = gson.toJson(key);
     doThrow(new IOException())
         .when(httpSessionMock)
         .post(buildCacheEndpoint(Constants.PROJECTS), keyJson);
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 d9e1b22..ef89178 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
@@ -61,9 +61,9 @@
 
   @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()));
     indexEventHandler =