diff --git a/requirements.txt b/requirements.txt
index aaf9f53..4759de4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ certifi==2020.6.20
 cffi==1.14.0
 chardet==3.0.4
 click==7.1.2
-cryptography==3.0
+cryptography==39.0.1
 flake8==3.8.3
 Flask==1.1.2
 Flask-Bcrypt==0.7.1