diff --git a/requirements.txt b/requirements.txt
index 3334059..70d1700 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ slack-bolt==1.27.0
 requests==2.32.5
 Flask==3.1.2
 pytest==9.0.2
-ruff==0.14.14
+ruff==0.15.4