diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e9b066e..13d6a99d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,19 @@
+# v0.5.6 (2026-06-20)
+
+## Features
+- **Ponytail**: minimalist code generation feature
+- **Headroom**: proxy lifecycle management + dashboard UI (one-click start/stop, install detection, status probing, token saver, claude↔openai shape conversion)
+- **CodeBuddy CN**: new OAuth provider (copilot.tencent.com) — 15-model catalog, /v2 inference, forced streaming, OpenAI-style reasoning
+- **OpenCode-Go**: align models with official endpoints; route Qwen 3.7 MiniMax via /v1/messages, GLM/Kimi/DeepSeek/MiMo via /chat/completions
+
+## Fixes
+- **Anthropic-compatible validation**: use POST /v1/messages (GET /models not spec, false "invalid" for valid keys)
+- **CLI tools**: tolerate JSONC configs in all 8 settings routes (opencode, openclaw, kilo, droid, cowork, copilot, claude, cline)
+- **Gemini/Antigravity**: preserve 'pattern' in tool schema translation (glob/grep)
+- **Combo/Fusion**: flatten Anthropic-style tool messages in panel calls (prevent 503)
+- **Models**: store provider custom models by provider scope
+- **Perplexity**: use /v1/models endpoint for key validation
+
 # v0.5.4 (2026-06-18)
 
 ## Fixes
diff --git a/cli/package.json b/cli/package.json
index f910ed4f..ce23132f 100644
--- a/cli/package.json
+++ b/cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "9router",
-  "version": "0.5.4",
+  "version": "0.5.6",
   "description": "9Router CLI - Start and manage 9Router server",
   "bin": {
     "9router": "./cli.js"
diff --git a/package.json b/package.json
index 8ad89cdc..61e80252 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "9router-app",
-  "version": "0.5.4",
+  "version": "0.5.6",
   "description": "9Router web dashboard",
   "private": true,
   "scripts": {