diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 114efc49936a..72add07f5ff1 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,7 +1,7 @@
 {
   "google-ads-ad_manager": "5.0.2",
   "google-ads-ad_manager+FILLER": "0.0.0",
-  "google-ads-ad_manager-v1": "5.0.2",
+  "google-ads-ad_manager-v1": "5.1.0",
   "google-ads-ad_manager-v1+FILLER": "0.0.0",
   "google-ads-data_manager": "0.4.2",
   "google-ads-data_manager+FILLER": "0.0.0",
diff --git a/google-ads-ad_manager-v1/CHANGELOG.md b/google-ads-ad_manager-v1/CHANGELOG.md
index 354b31b85e2b..73386644787e 100644
--- a/google-ads-ad_manager-v1/CHANGELOG.md
+++ b/google-ads-ad_manager-v1/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+### 5.1.0 (2026-08-13)
+
+#### Features
+
+* update API sources and regenerate ([#36241](https://github.com/googleapis/google-cloud-ruby/issues/36241)) 
+
 ### 5.0.2 (2026-08-11)
 
 #### Documentation
diff --git a/google-ads-ad_manager-v1/lib/google/ads/ad_manager/v1/version.rb b/google-ads-ad_manager-v1/lib/google/ads/ad_manager/v1/version.rb
index 5280d57f78b0..1560e5e451ce 100644
--- a/google-ads-ad_manager-v1/lib/google/ads/ad_manager/v1/version.rb
+++ b/google-ads-ad_manager-v1/lib/google/ads/ad_manager/v1/version.rb
@@ -21,7 +21,7 @@ module Google
   module Ads
     module AdManager
       module V1
-        VERSION = "5.0.2"
+        VERSION = "5.1.0"
       end
     end
   end
diff --git a/google-ads-ad_manager-v1/snippets/snippet_metadata_google.ads.admanager.v1.json b/google-ads-ad_manager-v1/snippets/snippet_metadata_google.ads.admanager.v1.json
index 4c8b9f0f5d13..6587fa98412b 100644
--- a/google-ads-ad_manager-v1/snippets/snippet_metadata_google.ads.admanager.v1.json
+++ b/google-ads-ad_manager-v1/snippets/snippet_metadata_google.ads.admanager.v1.json
@@ -1,7 +1,7 @@
 {
   "client_library": {
     "name": "google-ads-ad_manager-v1",
-    "version": "5.0.2",
+    "version": "5.1.0",
     "language": "RUBY",
     "apis": [
       {
diff --git a/librarian.yaml b/librarian.yaml
index 51d0843f0c77..5bff4f4824ac 100644
--- a/librarian.yaml
+++ b/librarian.yaml
@@ -35,7 +35,7 @@ libraries:
       wrapper_of:
         - v1:2.0
   - name: google-ads-ad_manager-v1
-    version: 5.0.2
+    version: 5.1.0
     apis:
       - path: google/ads/admanager/v1
   - name: google-ads-data_manager