diff --git a/requirements.txt b/requirements.txt
index 4a86589..1236634 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 requests>=2.18.0,<3.0.0
-cryptography==3.3.2
+cryptography==41.0.5
 SlackClient==2.2.1