diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2df18ac6e..efafef50b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## [0.12.1] - 2026-01-07
+
+### ✨ New Features
+- **@cartridge/controller**: Added configurable error display modes with `errorDisplayMode` option, enabling developers to control how transaction errors are presented to users with three modes: `modal` (default), `notification` (clickable toast), and `silent` (console only) (#2312)
+
+### 🚀 Improvements  
+- **Development**: Enhanced Claude Code integration with structured skill guides for code review, PR management, testing, Storybook snapshots, and release workflows (#2311, #2310)
+- **Documentation**: Expanded CLAUDE.md with detailed technology stack versions, build process explanations, and comprehensive development workflow guidance (#2310)
+
+### 🔧 Development
+- **Build**: Added .worktrees to .gitignore for improved Git worktree support (#2311)
+- **Claude Integration**: Added comprehensive permissions configuration and skill documentation for streamlined AI-assisted development (#2311, #2310)
+
 ## [0.12.0] - 2026-01-01
 
 ### ✨ New Features
diff --git a/examples/next/package.json b/examples/next/package.json
index 30accd84f..0fd2abe1f 100644
--- a/examples/next/package.json
+++ b/examples/next/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@cartridge/controller-example-next",
   "private": true,
-  "version": "0.12.0",
+  "version": "0.12.1",
   "scripts": {
     "dev": "env-cmd -f .env.dev next dev -p 3002",
     "dev:live": "env-cmd -f .env.live next dev -p 3002",
diff --git a/examples/node/package.json b/examples/node/package.json
index b55bc3646..a79b59b37 100644
--- a/examples/node/package.json
+++ b/examples/node/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cartridge-node-example",
-  "version": "0.12.0",
+  "version": "0.12.1",
   "description": "Example of using Cartridge session controller with Node.js",
   "type": "module",
   "scripts": {
diff --git a/examples/svelte/package.json b/examples/svelte/package.json
index a6beb5b89..f2332160f 100644
--- a/examples/svelte/package.json
+++ b/examples/svelte/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@cartridge/controller-example-svelte",
-	"version": "0.12.0",
+	"version": "0.12.1",
 	"private": true,
 	"scripts": {
 		"dev": "vite dev",
diff --git a/packages/connector/package.json b/packages/connector/package.json
index 36f27b12c..8f2a98faa 100644
--- a/packages/connector/package.json
+++ b/packages/connector/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@cartridge/connector",
-  "version": "0.12.0",
+  "version": "0.12.1",
   "description": "Cartridge Controller Connector",
   "module": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/packages/controller/package.json b/packages/controller/package.json
index 7dc224ca4..3cb8daf29 100644
--- a/packages/controller/package.json
+++ b/packages/controller/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@cartridge/controller",
-  "version": "0.12.0",
+  "version": "0.12.1",
   "description": "Cartridge Controller",
   "module": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/packages/eslint/package.json b/packages/eslint/package.json
index a8c02ce27..51d0a196c 100644
--- a/packages/eslint/package.json
+++ b/packages/eslint/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@cartridge/eslint",
   "private": true,
-  "version": "0.12.0",
+  "version": "0.12.1",
   "type": "module",
   "exports": {
     ".": "./index.js"
diff --git a/packages/keychain/package.json b/packages/keychain/package.json
index 1dc84cee3..fc9c756fc 100644
--- a/packages/keychain/package.json
+++ b/packages/keychain/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@cartridge/keychain",
-  "version": "0.12.0",
+  "version": "0.12.1",
   "private": true,
   "type": "module",
   "scripts": {
diff --git a/packages/tsconfig/package.json b/packages/tsconfig/package.json
index d4377eeac..45a27ceab 100644
--- a/packages/tsconfig/package.json
+++ b/packages/tsconfig/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@cartridge/tsconfig",
   "private": true,
-  "version": "0.12.0",
+  "version": "0.12.1",
   "files": [
     "base.json",
     "react.json"