diff --git a/.hgignore b/.hgignore
--- a/.hgignore
+++ b/.hgignore
@@ -20,8 +20,10 @@ syntax: regexp
 ^\.coverage$
 ^\.cache.*$
 ^\.venv.*$
+^\.ruff_cache.*$
 ^\.rhodecode$
 
+
 ^.dev
 ^build/
 ^coverage\.xml$