diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 47b6fe4b294..8ba5f1942ba 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -36,7 +36,7 @@
   "handwritten/spanner": "8.12.0",
   "handwritten/storage": "8.1.0",
   "packages/google-ads-admanager": "0.12.0",
-  "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 7bf10dd451e..e59e388f188 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": "f35defe1-cf5e-4b0c-9041-c547ed1b29d8",
+      "createTime": "2026-09-12T15:12:00.278Z"
+    },
     {
       "changes": [
         {
@@ -94123,5 +94140,5 @@
       "createTime": "2023-01-28T04:18:24.718Z"
     }
   ],
-  "updateTime": "2026-09-11T14:56:40.618Z"
+  "updateTime": "2026-09-12T15:12:00.278Z"
 }
\ No newline at end of file
diff --git a/packages/google-ads-datamanager/CHANGELOG.md b/packages/google-ads-datamanager/CHANGELOG.md
index 0bfd796841a..2b7527b8336 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) (2026-09-12)
+
+
+### 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",