diff --git a/CHANGELOG.md b/CHANGELOG.md
index 77db12642..a39b8c19a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,20 @@
 
 [1]: https://www.npmjs.com/package/@google-cloud/datastore?activeTab=versions
 
+## v3.1.1
+
+02-18-2019 22:46 PST
+
+### Bug fixes
+- fix: include proto d.ts in the build ([#335](https://github.com/googleapis/nodejs-datastore/pull/335))
+- fix(deps): update dependency @google-cloud/promisify to ^0.4.0 ([#333](https://github.com/googleapis/nodejs-datastore/pull/333))
+- fix: throw on invalid credentials ([#331](https://github.com/googleapis/nodejs-datastore/pull/331))
+- fix(deps): update dependency yargs to v13 ([#329](https://github.com/googleapis/nodejs-datastore/pull/329))
+
+### Documentation
+- build: use linkinator for docs test ([#332](https://github.com/googleapis/nodejs-datastore/pull/332))
+- docs: update links in contrib guide ([#334](https://github.com/googleapis/nodejs-datastore/pull/334))
+
 ## v3.1.0
 
 02-09-2019 17:57 PST
diff --git a/package.json b/package.json
index b8f36d9d7..9a386cc4b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@google-cloud/datastore",
   "description": "Cloud Datastore Client Library for Node.js",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "license": "Apache-2.0",
   "author": "Google Inc.",
   "engines": {
diff --git a/samples/package.json b/samples/package.json
index f2ce46dee..dc35669c8 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -12,7 +12,7 @@
     "test": "mocha system-test/*.test.js --timeout=600000"
   },
   "dependencies": {
-    "@google-cloud/datastore": "^3.1.0",
+    "@google-cloud/datastore": "^3.1.1",
     "sinon": "^7.0.0",
     "yargs": "^13.0.0"
   },