diff --git a/requirements.txt b/requirements.txt
index cff8ecc..4344c16 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ coincurve==13.0.0
 colorama==0.4.3
 comtypes==1.1.7
 contextlib2==0.6.0.post1
-cryptography==2.8
+cryptography==3.2
 cycler==0.10.0
 Cython==0.29.14
 cytoolz==0.10.1