diff --git a/CHANGELOG.md b/CHANGELOG.md
index 238c648..4981618 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,18 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.12.0] - 2023-10-03
+
+### Added
+
+- Step by step execution (`blockchain.sendMessageIter`)
+- Better docs
+
+### Fixed
+
+- `now` from `Blockchain` is now honored in `SmartContract.receiveMessage`
+- Exit code 1 is now counted as success in get methods
+
 ## [0.11.1] - 2023-07-26
 
 ### Changed
diff --git a/package.json b/package.json
index 897312b..915af89 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ton/sandbox",
-  "version": "0.11.1",
+  "version": "0.12.0",
   "description": "TON transaction emulator",
   "main": "dist/index.js",
   "license": "MIT",