diff --git a/requirements.txt b/requirements.txt
index a65b64a..e0a8f62 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 Flask==0.10.1
-cryptography==1.3.2
+cryptography==3.2
 gunicorn==19.6.0
 ipython==4.2.0
 redis==2.10.5