diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 2797c022c505..881e18d13698 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -223,7 +223,7 @@
   "google-cloud-ces+FILLER": "0.0.0",
   "google-cloud-ces-v1": "0.2.1",
   "google-cloud-ces-v1+FILLER": "0.0.0",
-  "google-cloud-ces-v1beta": "0.3.1",
+  "google-cloud-ces-v1beta": "0.4.0",
   "google-cloud-ces-v1beta+FILLER": "0.0.0",
   "google-cloud-channel": "2.2.0",
   "google-cloud-channel+FILLER": "0.0.0",
diff --git a/google-cloud-ces-v1beta/CHANGELOG.md b/google-cloud-ces-v1beta/CHANGELOG.md
index 411e4f5abea7..074a85ff1180 100644
--- a/google-cloud-ces-v1beta/CHANGELOG.md
+++ b/google-cloud-ces-v1beta/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+### 0.4.0 (2026-07-08)
+
+#### Features
+
+* update public libraries for CES v1beta ([#34713](https://github.com/googleapis/google-cloud-ruby/issues/34713)) 
+
 ### 0.3.1 (2026-07-01)
 
 #### Bug Fixes
diff --git a/google-cloud-ces-v1beta/lib/google/cloud/ces/v1beta/version.rb b/google-cloud-ces-v1beta/lib/google/cloud/ces/v1beta/version.rb
index 201b075bc6af..7371c03fc453 100644
--- a/google-cloud-ces-v1beta/lib/google/cloud/ces/v1beta/version.rb
+++ b/google-cloud-ces-v1beta/lib/google/cloud/ces/v1beta/version.rb
@@ -21,7 +21,7 @@ module Google
   module Cloud
     module Ces
       module V1beta
-        VERSION = "0.3.1"
+        VERSION = "0.4.0"
       end
     end
   end
diff --git a/google-cloud-ces-v1beta/snippets/snippet_metadata_google.cloud.ces.v1beta.json b/google-cloud-ces-v1beta/snippets/snippet_metadata_google.cloud.ces.v1beta.json
index 49ca68e8ed70..69c1f98abdc2 100644
--- a/google-cloud-ces-v1beta/snippets/snippet_metadata_google.cloud.ces.v1beta.json
+++ b/google-cloud-ces-v1beta/snippets/snippet_metadata_google.cloud.ces.v1beta.json
@@ -1,7 +1,7 @@
 {
   "client_library": {
     "name": "google-cloud-ces-v1beta",
-    "version": "0.3.1",
+    "version": "0.4.0",
     "language": "RUBY",
     "apis": [
       {