diff --git a/requirements.txt b/requirements.txt
index a20e669..a801891 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ conda-build==3.4.1
 conda-verify==2.0.0
 configparser==3.5.0
 contextlib2==0.5.5
-cryptography==2.1.4
+cryptography==3.2
 cycler==0.10.0
 Cython==0.27.3
 cytoolz==0.9.0