diff --git a/ChangeLog.md b/ChangeLog.md
index 3eaa371..11333e0 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,6 +1,6 @@
 # weechat-script-lint ChangeLog
 
-## Version 0.5.1 (under dev)
+## Version 0.5.1 (2022-11-11)
 
 - Run CI on Ubuntu 22.04 and macOS 11.
 - Add error `mixed_tabs_spaces` in README.
diff --git a/weechat_script_lint/main.py b/weechat_script_lint/main.py
index c4efb66..5dced54 100644
--- a/weechat_script_lint/main.py
+++ b/weechat_script_lint/main.py
@@ -29,7 +29,7 @@
 from weechat_script_lint.script import WeechatScript
 from weechat_script_lint.utils import color
 
-__version__ = "0.5.1-dev"
+__version__ = "0.5.1"
 
 __all__ = (
     "__version__",