diff --git a/CHANGELOG.md b/CHANGELOG.md
index f7208b29..f03167b8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -48,6 +48,7 @@
 
 
 
+
 
 
 <a name=release-note-0-0-1></a>
@@ -1307,3 +1308,22 @@
 
  - [[```d6f93486```](https://github.com/jina-ai/langchain-serve/commit/d6f934862dc2ed8ce8784295ff983a61e00bc19a)] __-__ __version__: the next version will be 0.0.50 (*Jina Dev Bot*)
 
+<a name=release-note-0-0-51></a>
+## Release Note (`0.0.51`)
+
+> Release time: 2023-07-04 06:49:01
+
+
+
+🙇 We'd like to thank all contributors for this new release! In particular,
+ Zac Li,  Jina Dev Bot,  🙇
+
+
+### 🐞 Bug fixes
+
+ - [[```ec43705a```](https://github.com/jina-ai/langchain-serve/commit/ec43705a840fe863569da328dd71a16248d3d8fc)] __-__ metrics middleware scope check bug (*Zac Li*)
+
+### 🍹 Other Improvements
+
+ - [[```7dd90736```](https://github.com/jina-ai/langchain-serve/commit/7dd90736e6a621bcb1c7b94e49325032c693e6b0)] __-__ __version__: the next version will be 0.0.51 (*Jina Dev Bot*)
+
diff --git a/lcserve/__init__.py b/lcserve/__init__.py
index eff2855a..dfd5d44a 100644
--- a/lcserve/__init__.py
+++ b/lcserve/__init__.py
@@ -16,4 +16,4 @@ def _ignore_warnings():
 from .backend.slackbot import SlackBot
 from .backend.slackbot.memory import MemoryMode, get_memory
 
-__version__ = '0.0.51'
+__version__ = '0.0.52'