diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0e5741f91928d..5f5ac4bfb1ffa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -180,7 +180,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Bump `lycheeverse/lychee-action` from 1.8.0 to 1.9.1 ([#11795](https://github.com/opensearch-project/OpenSearch/pull/11795), [#11887](https://github.com/opensearch-project/OpenSearch/pull/11887))
 - Bump `Lucene` from 9.8.0 to 9.9.2 ([#11421](https://github.com/opensearch-project/OpenSearch/pull/11421)), ([#12063](https://github.com/opensearch-project/OpenSearch/pull/12063))
 - Bump `com.networknt:json-schema-validator` from 1.0.86 to 1.2.0 ([#11886](https://github.com/opensearch-project/OpenSearch/pull/11886), [#11963](https://github.com/opensearch-project/OpenSearch/pull/11963))
-- Bump `com.google.api:gax-httpjson` from 0.103.1 to 2.39.0 ([#11794](https://github.com/opensearch-project/OpenSearch/pull/11794))
+- Bump `com.google.api:gax-httpjson` from 0.103.1 to 2.42.0 ([#11794](https://github.com/opensearch-project/OpenSearch/pull/11794), [#12165](https://github.com/opensearch-project/OpenSearch/pull/12165))
 - Bump `com.google.oauth-client:google-oauth-client` from 1.34.1 to 1.35.0 ([#11960](https://github.com/opensearch-project/OpenSearch/pull/11960))
 - Bump `com.diffplug.spotless` from 6.23.2 to 6.25.0 ([#11962](https://github.com/opensearch-project/OpenSearch/pull/11962), [#12055](https://github.com/opensearch-project/OpenSearch/pull/12055))
 - Bump `com.google.cloud:google-cloud-core` from 2.5.10 to 2.30.0 ([#11961](https://github.com/opensearch-project/OpenSearch/pull/11961))
diff --git a/plugins/repository-gcs/build.gradle b/plugins/repository-gcs/build.gradle
index 2ce67b1f25a80..b28f97677b0df 100644
--- a/plugins/repository-gcs/build.gradle
+++ b/plugins/repository-gcs/build.gradle
@@ -54,7 +54,7 @@ versions << [
 dependencies {
   api 'com.google.api:api-common:1.8.1'
   api 'com.google.api:gax:2.35.0'
-  api 'com.google.api:gax-httpjson:2.39.0'
+  api 'com.google.api:gax-httpjson:2.42.0'
 
   api 'com.google.apis:google-api-services-storage:v1-rev20230617-2.0.0'
 
@@ -206,7 +206,10 @@ thirdPartyAudit {
     // commons-logging provided dependencies
     'javax.jms.Message',
     'javax.servlet.ServletContextEvent',
-    'javax.servlet.ServletContextListener'
+    'javax.servlet.ServletContextListener',
+    // Bump for gax 2.42.0
+    'com.google.api.gax.rpc.EndpointContext',
+    'com.google.api.gax.rpc.RequestMutator'
   )
 }
 
diff --git a/plugins/repository-gcs/licenses/gax-httpjson-2.39.0.jar.sha1 b/plugins/repository-gcs/licenses/gax-httpjson-2.39.0.jar.sha1
deleted file mode 100644
index d0f3b8dfa6d25..0000000000000
--- a/plugins/repository-gcs/licenses/gax-httpjson-2.39.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-ebff086f21c54c1eb02056f94255b4f1836a8efe
\ No newline at end of file
diff --git a/plugins/repository-gcs/licenses/gax-httpjson-2.42.0.jar.sha1 b/plugins/repository-gcs/licenses/gax-httpjson-2.42.0.jar.sha1
new file mode 100644
index 0000000000000..672506572ed4d
--- /dev/null
+++ b/plugins/repository-gcs/licenses/gax-httpjson-2.42.0.jar.sha1
@@ -0,0 +1 @@
+4db06bc31c2fb34b0490362e8666c20fdc1fb3f2
\ No newline at end of file