diff --git a/requirements.txt b/requirements.txt
index db734be..3e4a3e4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-slack-bolt==1.20.1
+slack-bolt==1.21.2
 requests==2.32.3
 Flask==3.0.3
 pytest==8.3.3