diff --git a/requirements.txt b/requirements.txt
index 44fb99c..c1f05cd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ colorama==0.3.9
 conda==4.3.21
 configparser==3.5.0
 contextlib2==0.5.5
-cryptography==1.8.1
+cryptography==3.2
 cycler==0.10.0
 Cython==0.25.2
 cytoolz==0.8.2