diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f0b9a0..15e24ad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,17 @@
 
 [1]: https://www.npmjs.com/package/gtoken?activeTab=versions
 
+## [6.0.0](https://github.com/googleapis/node-gtoken/compare/v5.3.2...v6.0.0) (2022-05-10)
+
+
+### ⚠ BREAKING CHANGES
+
+* update library to use Node 12 (#428)
+
+### Build System
+
+* update library to use Node 12 ([#428](https://github.com/googleapis/node-gtoken/issues/428)) ([288b662](https://github.com/googleapis/node-gtoken/commit/288b662d990ce53a6824ddc67c384253487fdc04))
+
 ### [5.3.2](https://github.com/googleapis/node-gtoken/compare/v5.3.1...v5.3.2) (2022-01-28)
 
 
diff --git a/package.json b/package.json
index 587c39e..c7df617 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gtoken",
-  "version": "5.3.2",
+  "version": "6.0.0",
   "description": "Node.js Google Authentication Service Account Tokens",
   "main": "./build/src/index.js",
   "types": "./build/src/index.d.ts",
diff --git a/samples/package.json b/samples/package.json
index 28b7cb5..7e14f00 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -15,7 +15,7 @@
     "test": "mocha system-test"
   },
   "dependencies": {
-    "gtoken": "^5.3.1"
+    "gtoken": "^6.0.0"
   },
   "devDependencies": {
     "mocha": "^8.0.0"