diff --git a/requirements.txt b/requirements.txt
index 340cebd..a56cc49 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ certifi==2018.8.24
 cffi==1.11.5
 chardet==3.0.4
 click==6.7
-cryptography==2.3.1
+cryptography==3.2
 Flask==1.0.2
 gevent==1.3.6
 gevent-eventemitter==2.0