diff --git a/changelog.md b/changelog.md
index 592e263..fb4058c 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## 4.0.0
+
+Breaking changes:
+
+* Reimplement yauzl from scratch (various API changes)
+
+Features:
+
+* Validation of CRC32 checksums
+* Support Mac OS Archive Utility ZIPs
+
 ## 3.0.0
 
 Breaking changes:
diff --git a/package-lock.json b/package-lock.json
index dff6461..33648e8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "yauzl-promise",
-  "version": "3.0.0",
+  "version": "4.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "yauzl-promise",
-      "version": "3.0.0",
+      "version": "4.0.0",
       "license": "MIT",
       "dependencies": {
         "@node-rs/crc32": "^1.7.0",
diff --git a/package.json b/package.json
index a10ec9d..40721c5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "yauzl-promise",
-  "version": "3.0.0",
+  "version": "4.0.0",
   "description": "Unzip library for NodeJS",
   "main": "index.js",
   "files": [