diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 37b2ba248951..72d6ea54d196 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -23,7 +23,7 @@
   "handwritten/bigquery-storage": "5.1.0",
   "handwritten/bigtable": "6.5.0",
   "handwritten/cloud-profiler": "6.0.4",
-  "handwritten/datastore": "10.1.0",
+  "handwritten/datastore": "10.1.1",
   "handwritten/error-reporting": "3.0.5",
   "handwritten/firestore": "8.5.0",
   "handwritten/logging": "11.2.1",
diff --git a/changelog.json b/changelog.json
index fc518c4f4ee2..f3c20afbc531 100644
--- a/changelog.json
+++ b/changelog.json
@@ -1,6 +1,23 @@
 {
   "repository": "googleapis/google-cloud-node",
   "entries": [
+    {
+      "changes": [
+        {
+          "type": "fix",
+          "sha": "939d18dfd14295405a06d2023651d006d4992310",
+          "message": "Upgrade protobufjs and fix legacy key decoding in Datastore",
+          "issues": [
+            "8088"
+          ]
+        }
+      ],
+      "version": "10.1.1",
+      "language": "JAVASCRIPT",
+      "artifactName": "@google-cloud/datastore",
+      "id": "1994e17a-66a2-4c2c-bc0a-f7f31dc6a50d",
+      "createTime": "2026-05-05T21:43:20.707Z"
+    },
     {
       "changes": [
         {
@@ -77670,5 +77687,5 @@
       "createTime": "2023-01-28T04:18:24.718Z"
     }
   ],
-  "updateTime": "2026-05-01T17:22:33.483Z"
+  "updateTime": "2026-05-05T21:43:20.707Z"
 }
\ No newline at end of file
diff --git a/handwritten/datastore/CHANGELOG.md b/handwritten/datastore/CHANGELOG.md
index ed8130bfd26b..b13e9e469db5 100644
--- a/handwritten/datastore/CHANGELOG.md
+++ b/handwritten/datastore/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 [1]: https://www.npmjs.com/package/@google-cloud/datastore?activeTab=versions
 
+## [10.1.1](https://github.com/googleapis/google-cloud-node/compare/datastore-v10.1.0...datastore-v10.1.1) (2026-05-05)
+
+
+### Bug Fixes
+
+* Upgrade protobufjs and fix legacy key decoding in Datastore ([#8088](https://github.com/googleapis/google-cloud-node/issues/8088)) ([939d18d](https://github.com/googleapis/google-cloud-node/commit/939d18dfd14295405a06d2023651d006d4992310))
+
 ## [10.1.0](https://github.com/googleapis/nodejs-datastore/compare/v10.0.1...v10.1.0) (2025-11-20)
 
 
diff --git a/handwritten/datastore/package.json b/handwritten/datastore/package.json
index bc65625465cb..50b0fa9ec0e5 100644
--- a/handwritten/datastore/package.json
+++ b/handwritten/datastore/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google-cloud/datastore",
-  "version": "10.1.0",
+  "version": "10.1.1",
   "description": "Cloud Datastore Client Library for Node.js",
   "keywords": [
     "google apis client",