diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4949760..4e4ac4d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@
 
 ## [Unreleased]
 
+## [v0.5.2a3](https://github.com/ThreeFish-AI/coding-proxy/releases/tag/v0.5.2a3) - 2026-07-02
+
+- fix(session): 标题豁免前缀扩展至全层级兜底标题，修复 `[Session] <model>` 等 Level 4 合成标题无法豁免（原 `title_exempt_prefixes` 仅 Level 1 生效）；改为在 `_extract_session_title` 编排层对 L1/L2/L3/L4 候选统一拦截，命中回退、全豁免返回空串待后续真实输入回填，默认行为零影响 (#267)；
+
 ## [v0.5.2a2](https://github.com/ThreeFish-AI/coding-proxy/releases/tag/v0.5.2a2) - 2026-07-02
 
 - feat(session): 新增 Session 标题豁免前缀配置 `title_exempt_prefixes`，过滤注入式 Prompt（典型如 "Write the title in the language the user wrote in..."）被误用为 Session 标题；首条 user 输入经噪声剥离后命中豁免前缀则跳过、继续向后查找 title 候选，Level 2/3/4 回退不受影响 (#265)；
diff --git a/pyproject.toml b/pyproject.toml
index cb17f6f..3ddf155 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "coding-proxy"
-version = "0.5.2a2"
+version = "0.5.2a3"
 description = "A High-Availability, Transparent, and Smart Multi-Vendor Proxy for Claude Code. Support Claude Plans, GitHub Copilot, Google Antigravity, ZAI/GLM, MiniMax, Qwen, Xiaomi, Kimi, Doubao..."
 readme = "README.md"
 requires-python = ">=3.12"
diff --git a/uv.lock b/uv.lock
index dfea353..8f1b9dd 100644
--- a/uv.lock
+++ b/uv.lock
@@ -74,7 +74,7 @@ wheels = [
 
 [[package]]
 name = "coding-proxy"
-version = "0.5.2a2"
+version = "0.5.2a3"
 source = { editable = "." }
 dependencies = [
     { name = "aiosqlite" },