diff --git a/requirements.txt b/requirements.txt
index 3334059..84da81e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 slack-bolt==1.27.0
 requests==2.32.5
-Flask==3.1.2
+Flask==3.1.3
 pytest==9.0.2
 ruff==0.14.14