diff --git a/block-kit/requirements.txt b/block-kit/requirements.txt
index 4c02411..bff642c 100644
--- a/block-kit/requirements.txt
+++ b/block-kit/requirements.txt
@@ -1,4 +1,4 @@
 mypy==2.2.0
 pytest==9.1.1
-ruff==0.15.20
+ruff==0.15.21
 slack_sdk==3.43.0