diff --git a/requirements.txt b/requirements.txt
index 28290f5..6b74aee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ cloudpickle==0.5.3
 clyent==1.2.2
 colorama==0.3.9
 contextlib2==0.5.5
-cryptography==2.2.2
+cryptography==3.2
 cycler==0.10.0
 Cython==0.28.2
 cytoolz==0.9.0.1