diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index e3d9de9dc55e..2c780b142658 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -19,7 +19,7 @@
   "core/packages/typeless-sample-bot": "3.1.2",
   "core/paginator": "6.0.2",
   "core/precise-date": "5.0.1",
-  "core/projectify": "5.0.1",
+  "core/projectify": "5.1.0",
   "core/promisify": "5.0.1",
   "handwritten/bigquery": "8.3.1",
   "handwritten/bigquery-storage": "5.1.2",
diff --git a/changelog.json b/changelog.json
index 473e225be0a4..178f145e2671 100644
--- a/changelog.json
+++ b/changelog.json
@@ -1,6 +1,23 @@
 {
   "repository": "googleapis/google-cloud-node",
   "entries": [
+    {
+      "changes": [
+        {
+          "type": "feat",
+          "sha": "3391fd27d1c15e051293207a07c6db00e760d370",
+          "message": "Update API sources and regenerate",
+          "issues": [
+            "8672"
+          ]
+        }
+      ],
+      "version": "5.1.0",
+      "language": "JAVASCRIPT",
+      "artifactName": "@google-cloud/projectify",
+      "id": "ef7418ba-36d6-4c30-a8ea-13c4434195a7",
+      "createTime": "2026-06-24T18:20:52.474Z"
+    },
     {
       "changes": [
         {
@@ -80931,5 +80948,5 @@
       "createTime": "2023-01-28T04:18:24.718Z"
     }
   ],
-  "updateTime": "2026-06-24T17:44:31.336Z"
+  "updateTime": "2026-06-24T18:20:52.474Z"
 }
\ No newline at end of file
diff --git a/core/projectify/CHANGELOG.md b/core/projectify/CHANGELOG.md
index f78e2176ce41..079304bfea41 100644
--- a/core/projectify/CHANGELOG.md
+++ b/core/projectify/CHANGELOG.md
@@ -4,6 +4,13 @@
 [npm history][1]
 
 [1]: https://www.npmjs.com/package/@google-cloud/projectify?activeTab=versions
+## [5.1.0](https://github.com/googleapis/google-cloud-node/compare/projectify-v5.0.1...projectify-v5.1.0) (2026-06-24)
+
+
+### Features
+
+* Update API sources and regenerate ([#8672](https://github.com/googleapis/google-cloud-node/issues/8672)) ([3391fd2](https://github.com/googleapis/google-cloud-node/commit/3391fd27d1c15e051293207a07c6db00e760d370))
+
 ## [5.0.1](https://github.com/googleapis/google-cloud-node/compare/projectify-v5.0.0...projectify-v5.0.1) (2026-05-11)
 
 
diff --git a/core/projectify/package.json b/core/projectify/package.json
index b3da71844659..2dc004810e19 100644
--- a/core/projectify/package.json
+++ b/core/projectify/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google-cloud/projectify",
-  "version": "5.0.1",
+  "version": "5.1.0",
   "description": "A simple utility for replacing the projectid token in objects.",
   "main": "build/src/index.js",
   "types": "build/src/index.d.ts",