diff --git a/requirements.txt b/requirements.txt
index 2451752..41f64e2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ conda-verify==3.1.1
 contextlib2==0.5.5
 coverage==4.5.3
 coveralls==1.8.1
-cryptography==2.6.1
+cryptography==3.2
 cycler==0.10.0
 Cython==0.29.6
 cytoolz==0.9.0.1