diff --git a/BUILD b/BUILD
index 75f3820..bca433e 100644
--- a/BUILD
+++ b/BUILD
@@ -11,6 +11,7 @@
     "@aopalliance//jar",
     "@dbcp//jar",
     "@guava//jar",
+    "@guava-failureaccess//jar",
     "@guice//jar",
     "@guice-assistedinject//jar",
     "@javaewah//jar",
@@ -86,11 +87,8 @@
     exports = EXECUTOR_DEPS + PLUGIN_DEPS + PLUGIN_TEST_DEPS + [
         ":gc-conductor__plugin",
         ":gc-executor_lib",
-        "@byte-buddy//jar",
         "@duct_tape//jar",
         "@jna//jar",
-        "@mockito//jar",
-        "@objenesis//jar",
         "@testcontainers-database-commons//jar",
         "@testcontainers-jdbc//jar",
         "@testcontainers-postgres//jar",
diff --git a/WORKSPACE b/WORKSPACE
index 8f03732..d867029 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "fff6f20bb2eceaf872a8acf8ad51471c25a82d38",
+    commit = "15eae2ee5cd524a204bd62c3d59bfd0ce86916ec",
     #local_path = "/home/<user>/projects/bazlets",
 )
 
diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index 96504a2..746d014 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -2,42 +2,11 @@
 
 def external_plugin_deps():
     maven_jar(
-        name = "mockito",
-        artifact = "org.mockito:mockito-core:2.28.2",
-        sha1 = "91110215a8cb9b77a46e045ee758f77d79167cc0",
-        deps = [
-            "@byte-buddy//jar",
-            "@byte-buddy-agent//jar",
-            "@objenesis//jar",
-        ],
-    )
-
-    BYTE_BUDDY_VERSION = "1.9.10"
-
-    maven_jar(
-        name = "byte-buddy",
-        artifact = "net.bytebuddy:byte-buddy:" + BYTE_BUDDY_VERSION,
-        sha1 = "211a2b4d3df1eeef2a6cacf78d74a1f725e7a840",
-    )
-
-    maven_jar(
-        name = "byte-buddy-agent",
-        artifact = "net.bytebuddy:byte-buddy-agent:" + BYTE_BUDDY_VERSION,
-        sha1 = "9674aba5ee793e54b864952b001166848da0f26b",
-    )
-
-    maven_jar(
         name = "duct_tape",
         artifact = "org.rnorth.duct-tape:duct-tape:1.0.8",
         sha1 = "92edc22a9ab2f3e17c9bf700aaee377d50e8b530",
     )
 
-    maven_jar(
-        name = "objenesis",
-        artifact = "org.objenesis:objenesis:2.6",
-        sha1 = "639033469776fd37c08358c6b92a4761feb2af4b",
-    )
-
     SLF4J_VERS = "1.7.26"
 
     maven_jar(
@@ -91,23 +60,29 @@
     )
 
     maven_jar(
-        name = "guava",
-        artifact = "com.google.guava:guava:26.0-jre",
-        sha1 = "6a806eff209f36f635f943e16d97491f00f6bfab",
+        name = "guava-failureaccess",
+        artifact = "com.google.guava:failureaccess:1.0.1",
+        sha1 = "1dcf1de382a0bf95a3d8b0849546c88bac1292c9",
     )
 
-    GUICE_VERS = "4.2.1"
+    maven_jar(
+        name = "guava",
+        artifact = "com.google.guava:guava:27.0.1-jre",
+        sha1 = "bd41a290787b5301e63929676d792c507bbc00ae",
+    )
+
+    GUICE_VERS = "4.2.2"
 
     maven_jar(
         name = "guice",
         artifact = "com.google.inject:guice:" + GUICE_VERS,
-        sha1 = "f77dfd89318fe3ff293bafceaa75fbf66e4e4b10",
+        sha1 = "6dacbe18e5eaa7f6c9c36db33b42e7985e94ce77",
     )
 
     maven_jar(
         name = "guice-assistedinject",
         artifact = "com.google.inject.extensions:guice-assistedinject:" + GUICE_VERS,
-        sha1 = "d327e4aee7c96f08cd657c17da231a1f4a8999ac",
+        sha1 = "c33fb10080d58446f752b4fcfff8a5fabb80a449",
     )
 
     maven_jar(
@@ -125,8 +100,8 @@
     maven_jar(
         name = "jgit",
         artifact =
-            "org.eclipse.jgit:org.eclipse.jgit:5.1.12.201910011832-r",
-        sha1 = "62c60aa985aa8dcfa6ad7308d130c319a1d01073",
+            "org.eclipse.jgit:org.eclipse.jgit:5.3.6.201910020505-r",
+        sha1 = "0b9085bd16c630412bfa50bcc509dcedfbbe16d3",
     )
 
     maven_jar(
diff --git a/src/main/resources/Documentation/build.md b/src/main/resources/Documentation/build.md
index 3643444..24ec423 100644
--- a/src/main/resources/Documentation/build.md
+++ b/src/main/resources/Documentation/build.md
@@ -7,7 +7,7 @@
 * In Gerrit tree.
 
 Standalone build mode is recommended, as this mode doesn't require local Gerrit
-tree to exist.
+tree to exist. This plugin has a side component, gc-executor, to build as well.
 
 Successfully running some of the tests requires Docker,
 which are skipped if Docker is not available.
@@ -55,6 +55,7 @@
 
 to generate the required files and then import the project.
 
+## Building gc-executor
 
 To build the executor, issue the following command:
 
@@ -65,11 +66,21 @@
 The output is created in:
 
 ```
-  /bazel-bin/gc-executor_deploy.jar
+  bazel-bin/gc-executor_deploy.jar
 ```
 
 This jar should be renamed to gc-executor.jar before deployment.
 
+Once the executor is built, the resulting postgresql jar file like below
+should be manually copied over to the gerrit site /lib folder; on macOS:
+
+```
+  bazel-out/darwin-fastbuild/bin/gc-executor.runfiles/gc_executor/external/postgresql/jar/postgresql-42.2.5.jar
+```
+
+That file has to be in accordance with potentially existing database driver
+files under site's /lib, for proper account_patch_reviews support.
+
 ## Build in Gerrit tree
 
 Clone or link this plugin to the plugins directory of Gerrit's
diff --git a/src/test/README.md b/src/test/README.md
index 885522e..858ef4c 100644
--- a/src/test/README.md
+++ b/src/test/README.md
@@ -6,7 +6,7 @@
 ```
 
 To start using the files under these directories above, consider the
-[instructions](https://gerrit-documentation.storage.googleapis.com/Documentation/2.16.19/dev-e2e-tests.html)
+[instructions](https://gerrit-documentation.storage.googleapis.com/Documentation/3.0.9/dev-e2e-tests.html)
 on how to use Gerrit core's Gatling framework. These are about running
 non-core test scenarios such as this plugin one below: