diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index b9379c6db02..ffc18b973e9 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -36,7 +36,7 @@
   "handwritten/spanner": "9.0.0",
   "handwritten/storage": "8.2.0",
   "packages/google-ads-admanager": "0.13.0",
-  "packages/google-ads-datamanager": "1.1.0",
+  "packages/google-ads-datamanager": "1.2.0",
   "packages/google-ai-generativelanguage": "4.1.0",
   "packages/google-analytics-admin": "10.1.0",
   "packages/google-analytics-data": "7.1.0",
diff --git a/changelog.json b/changelog.json
index 76bf2c2c8e9..038822f5ff5 100644
--- a/changelog.json
+++ b/changelog.json
@@ -1,6 +1,23 @@
 {
   "repository": "googleapis/google-cloud-node",
   "entries": [
+    {
+      "changes": [
+        {
+          "type": "feat",
+          "sha": "07ae774a8e52185a3598c878513377e7a019f127",
+          "message": "Update API sources and regenerate",
+          "issues": [
+            "9293"
+          ]
+        }
+      ],
+      "version": "1.2.0",
+      "language": "JAVASCRIPT",
+      "artifactName": "@google-ads/datamanager",
+      "id": "c651c783-f539-45bd-845e-e8b7cee255c9",
+      "createTime": "2026-09-19T00:34:58.774Z"
+    },
     {
       "changes": [
         {
@@ -95131,5 +95148,5 @@
       "createTime": "2023-01-28T04:18:24.718Z"
     }
   ],
-  "updateTime": "2026-09-18T13:12:38.821Z"
+  "updateTime": "2026-09-19T00:34:58.774Z"
 }
\ No newline at end of file
diff --git a/packages/google-ads-datamanager/CHANGELOG.md b/packages/google-ads-datamanager/CHANGELOG.md
index 0bfd796841a..09ab37b9cca 100644
--- a/packages/google-ads-datamanager/CHANGELOG.md
+++ b/packages/google-ads-datamanager/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.2.0](https://github.com/googleapis/google-cloud-node/compare/google-ads-datamanager-v1.1.0...google-ads-datamanager-v1.2.0) (2026-09-19)
+
+
+### Features
+
+* Update API sources and regenerate ([#9293](https://github.com/googleapis/google-cloud-node/issues/9293)) ([07ae774](https://github.com/googleapis/google-cloud-node/commit/07ae774a8e52185a3598c878513377e7a019f127))
+
 ## [1.1.0](https://github.com/googleapis/google-cloud-node/compare/google-ads-datamanager-v1.0.0...google-ads-datamanager-v1.1.0) (2026-09-09)
 
 
diff --git a/packages/google-ads-datamanager/package.json b/packages/google-ads-datamanager/package.json
index 58a80005713..8b616a28fbd 100644
--- a/packages/google-ads-datamanager/package.json
+++ b/packages/google-ads-datamanager/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google-ads/datamanager",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "Data Manager API client for Node.js",
   "repository": {
     "type": "git",