diff --git a/requirements.txt b/requirements.txt
index 208249c..64ff443 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ certifi==2018.4.16
 cffi==1.11.5
 chardet==3.0.4
 coincurve==9.0.0
-cryptography==2.3.1
+cryptography==3.2
 cytoolz==0.9.0.1
 decorator==4.3.0
 dict2xml==1.6