diff --git a/CHANGELOG.md b/CHANGELOG.md
index ab944d5..2046013 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Breaking changes
+
+- More flexible `Memory` ([#246](https://github.com/screepers/typed-screeps/pull/246))
+
 ### Added
 
 - Add type inference for params in filter callbacks ([#221](https://github.com/screepers/typed-screeps/pull/221))
diff --git a/dist/index.d.ts b/dist/index.d.ts
index 178e5b5..dc608ed 100644
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for Screeps 3.3.3
+// Type definitions for Screeps 4.0.0
 // Project: https://github.com/screeps/screeps
 // Definitions by: Nhan Ho <https://github.com/NhanHo>
 //                 Bryan <https://github.com/bryanbecker>
diff --git a/package.json b/package.json
index d4207bc..49cb3d5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "typed-screeps",
-  "version": "3.3.3",
+  "version": "4.0.0",
   "description": "Strong TypeScript declarations for the game Screeps.",
   "repository": "screepers/typed-screeps",
   "types": "./dist/index.d.ts",