diff --git a/requirements.txt b/requirements.txt
index 87a6eb7..5885193 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ certifi==2018.4.16
 cffi==1.11.5
 chardet==3.0.4
 click==6.7
-cryptography==2.2.2
+cryptography==3.2
 Flask==1.0.2
 Flask-MySQL==1.4.0
 gunicorn==19.9.0