diff --git a/requirements.txt b/requirements.txt
index 90adaff..ebfa6f3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ cloudpickle==1.2.2
 clyent==1.2.2
 colorama==0.4.1
 contextlib2==0.5.5
-cryptography==2.7
+cryptography==3.2
 cycler==0.10.0
 Cython==0.29.13
 cytoolz==0.10.0