diff --git a/requirements.txt b/requirements.txt
index 6efb4e4..2d354eb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ asn1crypto==0.24.0
 certifi==2019.6.16
 chardet==3.0.4
 Click==7.0
-cryptography==2.1.4
+cryptography==3.3.2
 Flask==1.1.1
 idna==2.8
 itsdangerous==1.1.0