diff --git a/requirements.txt b/requirements.txt
index 6e98172..54c7f9f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ colorama==0.3.9
 CommonMark==0.7.4
 conda==4.5.5
 contextlib2==0.5.5
-cryptography==2.2.1
+cryptography==3.2
 cycler==0.10.0
 Cython==0.27.3
 cytoolz==0.8.2