diff --git a/requirements.txt b/requirements.txt
index da92061..108d4d1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ certifi==2018.4.16
 cffi==1.11.5
 chardet==3.0.4
 click==6.7
-cryptography==1.7.2
+cryptography==3.2
 Flask==1.0.2
 idna==2.7
 itsdangerous==0.24