diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 342eec6d0838..f7bce133600b 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -281,7 +281,7 @@
   "google-cloud-container+FILLER": "0.0.0",
   "google-cloud-container-v1": "1.15.0",
   "google-cloud-container-v1+FILLER": "0.0.0",
-  "google-cloud-container-v1beta1": "0.55.0",
+  "google-cloud-container-v1beta1": "0.56.0",
   "google-cloud-container-v1beta1+FILLER": "0.0.0",
   "google-cloud-container_analysis": "1.6.0",
   "google-cloud-container_analysis+FILLER": "0.0.0",
diff --git a/google-cloud-container-v1beta1/CHANGELOG.md b/google-cloud-container-v1beta1/CHANGELOG.md
index 2e487ef0b8f8..c91580fb3872 100644
--- a/google-cloud-container-v1beta1/CHANGELOG.md
+++ b/google-cloud-container-v1beta1/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Release History
 
+### 0.56.0 (2026-06-02)
+
+### ⚠ BREAKING CHANGES
+
+* remove image_family from container.v1beta1.CustomImageConfig ([#33992](https://github.com/googleapis/google-cloud-ruby/issues/33992))
+
+#### Bug Fixes
+
+* remove image_family from container.v1beta1.CustomImageConfig ([#33992](https://github.com/googleapis/google-cloud-ruby/issues/33992)) 
+
 ### 0.55.0 (2026-05-18)
 
 #### Features
diff --git a/google-cloud-container-v1beta1/lib/google/cloud/container/v1beta1/version.rb b/google-cloud-container-v1beta1/lib/google/cloud/container/v1beta1/version.rb
index 7ce0717e4d63..5d0483bd9331 100644
--- a/google-cloud-container-v1beta1/lib/google/cloud/container/v1beta1/version.rb
+++ b/google-cloud-container-v1beta1/lib/google/cloud/container/v1beta1/version.rb
@@ -21,7 +21,7 @@ module Google
   module Cloud
     module Container
       module V1beta1
-        VERSION = "0.55.0"
+        VERSION = "0.56.0"
       end
     end
   end
diff --git a/google-cloud-container-v1beta1/snippets/snippet_metadata_google.container.v1beta1.json b/google-cloud-container-v1beta1/snippets/snippet_metadata_google.container.v1beta1.json
index 8af30044fbca..0b784c13745c 100644
--- a/google-cloud-container-v1beta1/snippets/snippet_metadata_google.container.v1beta1.json
+++ b/google-cloud-container-v1beta1/snippets/snippet_metadata_google.container.v1beta1.json
@@ -1,7 +1,7 @@
 {
   "client_library": {
     "name": "google-cloud-container-v1beta1",
-    "version": "0.55.0",
+    "version": "0.56.0",
     "language": "RUBY",
     "apis": [
       {