diff --git a/requirements.txt b/requirements.txt
index 70d0ded..18aeac0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 pytest==9.0.2
-ruff==0.9.4
+ruff==0.15.4
 slack-bolt==1.27.0