diff --git a/requirements.txt b/requirements.txt
index f355fe5..4fb983b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ cached-property==1.3.0
 certifi==2017.4.17
 cffi==1.10.0
 chardet==3.0.3
-cryptography==2.0.3
+cryptography==3.2
 defusedxml==0.5.0
 idna==2.5
 isodate==0.5.4