diff --git a/requirements.txt b/requirements.txt
index 0728377..20d3251 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ WTForms==2.1
 Werkzeug==0.11.15
 cffi==1.9.1
 click==6.7
-cryptography==2.8
+cryptography==3.2
 enum34==1.1.6
 flask-mongoengine==0.8.1
 gunicorn==19.6.0