diff --git a/requirements.txt b/requirements.txt
index 071b45db..fd060688 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ certifi==2020.6.20
 cffi==1.14.0
 chardet==3.0.4
 contextlib2==0.6.0.post1
-cryptography==2.9.2
+cryptography==39.0.1
 enum34==1.1.10
 idna==2.10
 importlib-resources==3.0.0