diff --git a/requirements.txt b/requirements.txt
index 7f5ef54..51f7021 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ cloudpickle==0.6.1
 clyent==1.2.2
 colorama==0.4.1
 contextlib2==0.5.5
-cryptography==2.4.2
+cryptography==3.2
 cycler==0.10.0
 Cython==0.29.2
 cytoolz==0.9.0.1