diff --git a/requirements.txt b/requirements.txt
index ebc620c..a280be9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 slack-bolt==1.27.0
 pytest==9.0.1
 flake8==7.3.0
-black==25.11.0
+black==25.12.0