diff --git a/requirements.txt b/requirements.txt
index 8c32751..bf0eb11 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,7 +42,7 @@ conda-package-handling==1.3.11
 conda-verify==3.4.2
 contextlib2==0.5.5
 coverage==4.5.4
-cryptography==2.7
+cryptography==3.2
 cycler==0.10.0
 Cython==0.29.12
 cytoolz==0.10.0