diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 4f39b1d8019c..f2d1f8e6bedf 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,7 +1,7 @@
 {
   "google-ads-ad_manager": "4.2.0",
   "google-ads-ad_manager+FILLER": "0.0.0",
-  "google-ads-ad_manager-v1": "4.2.0",
+  "google-ads-ad_manager-v1": "5.0.0",
   "google-ads-ad_manager-v1+FILLER": "0.0.0",
   "google-ads-data_manager": "0.4.0",
   "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 d8daf68ca1b6..e9ff20a9416a 100644
--- a/google-ads-ad_manager-v1/CHANGELOG.md
+++ b/google-ads-ad_manager-v1/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+### 5.0.0 (2026-07-24)
+
+### ⚠ BREAKING CHANGES
+
+* Added additional LineItem fields ([#34997](https://github.com/googleapis/google-cloud-ruby/issues/34997))
+
+#### Features
+
+* Added additional LineItem fields ([#34997](https://github.com/googleapis/google-cloud-ruby/issues/34997)) 
+
 ### 4.2.0 (2026-07-20)
 
 #### Features
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 1e6fdf5f70ab..368b3b4de5a9 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 = "4.2.0"
+        VERSION = "5.0.0"
       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 200cd5fb32fa..b968e9f2f9c8 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": "4.2.0",
+    "version": "5.0.0",
     "language": "RUBY",
     "apis": [
       {