diff --git a/requirements.txt b/requirements.txt
index d19fb81..2d75e26 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ cloudpickle==0.2.2
 colorama==0.3.7
 configobj==5.0.6
 contextlib2==0.5.4
-cryptography==1.7.1
+cryptography==3.2
 cycler==0.10.0
 Cython==0.25.2
 cytoolz==0.8.2