diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index b29befd8b94c..e619b2f2b4ae 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -253,7 +253,7 @@
   "google-cloud-config_delivery-v1+FILLER": "0.0.0",
   "google-cloud-config_service": "2.1.0",
   "google-cloud-config_service+FILLER": "0.0.0",
-  "google-cloud-config_service-v1": "2.8.0",
+  "google-cloud-config_service-v1": "2.9.0",
   "google-cloud-config_service-v1+FILLER": "0.0.0",
   "google-cloud-connectors": "2.1.0",
   "google-cloud-connectors+FILLER": "0.0.0",
diff --git a/google-cloud-config_service-v1/CHANGELOG.md b/google-cloud-config_service-v1/CHANGELOG.md
index 97dc5bc7f385..2751b15694ca 100644
--- a/google-cloud-config_service-v1/CHANGELOG.md
+++ b/google-cloud-config_service-v1/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+### 2.9.0 (2026-04-11)
+
+#### Features
+
+* adding DeploymentGroups, you can now manage deployment of multiple module root dependencies in a single DAG ([#33816](https://github.com/googleapis/google-cloud-ruby/issues/33816)) 
+
 ### 2.8.0 (2026-04-02)
 
 #### Features
diff --git a/google-cloud-config_service-v1/lib/google/cloud/config_service/v1/version.rb b/google-cloud-config_service-v1/lib/google/cloud/config_service/v1/version.rb
index 340bb2d6737f..a27ce3d03ae6 100644
--- a/google-cloud-config_service-v1/lib/google/cloud/config_service/v1/version.rb
+++ b/google-cloud-config_service-v1/lib/google/cloud/config_service/v1/version.rb
@@ -21,7 +21,7 @@ module Google
   module Cloud
     module ConfigService
       module V1
-        VERSION = "2.8.0"
+        VERSION = "2.9.0"
       end
     end
   end
diff --git a/google-cloud-config_service-v1/snippets/snippet_metadata_google.cloud.config.v1.json b/google-cloud-config_service-v1/snippets/snippet_metadata_google.cloud.config.v1.json
index 2e4b9889e385..fab77fcc8772 100644
--- a/google-cloud-config_service-v1/snippets/snippet_metadata_google.cloud.config.v1.json
+++ b/google-cloud-config_service-v1/snippets/snippet_metadata_google.cloud.config.v1.json
@@ -1,7 +1,7 @@
 {
   "client_library": {
     "name": "google-cloud-config_service-v1",
-    "version": "2.8.0",
+    "version": "2.9.0",
     "language": "RUBY",
     "apis": [
       {