diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9a2eed6..b9f0aa1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+# [4.0.0](https://github.com/SvenWesterlaken/mongo4j/compare/v3.1.11...v4.0.0) (2021-09-12)
+
+
+### Bug Fixes
+
+* **mongoose:** upgrade mongoose to major version 6 ([da4807e](https://github.com/SvenWesterlaken/mongo4j/commit/da4807ee2529a595a85d5c52afe54a0360ea5600))
+* **packages:** npm audit to fix vulnerabilities ([c71685b](https://github.com/SvenWesterlaken/mongo4j/commit/c71685b595e2fc912c0b04e4d237ad2bee978809))
+
 ## [3.1.11](https://github.com/SvenWesterlaken/mongo4j/compare/v3.1.10...v3.1.11) (2021-04-16)
 
 
diff --git a/package-lock.json b/package-lock.json
index 116b722..1502fe9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "mongo4j",
-  "version": "3.1.11",
+  "version": "4.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 4244e7e..ebb9e16 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mongo4j",
-  "version": "3.1.11",
+  "version": "4.0.0",
   "description": "Mongoose plugin to maintain Neo4J in combination with MongoDB",
   "main": "index.js",
   "scripts": {