diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index a427788baf7b..b30cc45521cb 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -51,7 +51,7 @@
   "google-cloud-agent_registry+FILLER": "0.0.0",
   "google-cloud-agent_registry-v1": "0.1.1",
   "google-cloud-agent_registry-v1+FILLER": "0.0.0",
-  "google-cloud-ai_platform": "2.4.1",
+  "google-cloud-ai_platform": "2.4.2",
   "google-cloud-ai_platform+FILLER": "0.0.0",
   "google-cloud-ai_platform-v1": "1.47.1",
   "google-cloud-ai_platform-v1+FILLER": "0.0.0",
diff --git a/google-cloud-ai_platform/CHANGELOG.md b/google-cloud-ai_platform/CHANGELOG.md
index fd7594de1fc6..a6cbcc852f79 100644
--- a/google-cloud-ai_platform/CHANGELOG.md
+++ b/google-cloud-ai_platform/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+### 2.4.2 (2026-08-11)
+
+#### Bug Fixes
+
+* onboard google-cloud-ai_platform and google-cloud-ai_platform-v1 ([#36204](https://github.com/googleapis/google-cloud-ruby/issues/36204)) 
+
 ### 2.4.1 (2026-08-05)
 
 #### Bug Fixes
diff --git a/google-cloud-ai_platform/lib/google/cloud/ai_platform/version.rb b/google-cloud-ai_platform/lib/google/cloud/ai_platform/version.rb
index 864f519b8dd4..35537434089b 100644
--- a/google-cloud-ai_platform/lib/google/cloud/ai_platform/version.rb
+++ b/google-cloud-ai_platform/lib/google/cloud/ai_platform/version.rb
@@ -20,7 +20,7 @@
 module Google
   module Cloud
     module AIPlatform
-      VERSION = "2.4.1"
+      VERSION = "2.4.2"
     end
   end
 end
diff --git a/librarian.yaml b/librarian.yaml
index b8271d4f8133..bd7d8ec62e4a 100644
--- a/librarian.yaml
+++ b/librarian.yaml
@@ -193,7 +193,7 @@ libraries:
       - path: google/cloud/agentregistry/v1
     skip_generate: true
   - name: google-cloud-ai_platform
-    version: 2.4.1
+    version: 2.4.2
     apis:
       - path: google/cloud/aiplatform/v1
         ruby: