diff --git a/requirements.txt b/requirements.txt
index 1ba0a44..3786d98 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ conda-build==3.18.9
 conda-package-handling==1.6.0
 conda-verify==3.4.2
 contextlib2==0.6.0
-cryptography==2.7
+cryptography==3.2
 cycler==0.10.0
 Cython==0.29.13
 cytoolz==0.10.0