diff --git a/requirements.txt b/requirements.txt
index b1168ad..c2692e9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-slack-bolt==1.27.0
+slack-bolt==1.28.0
 requests==2.33.1
 Flask==3.1.3
 pytest==9.0.2