diff --git a/requirements.txt b/requirements.txt
index e341593..a390baf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 asn1crypto==0.24.0
 certifi==2019.6.16
 cffi==1.12.3
-cryptography==2.7
+cryptography==39.0.1
 future==0.17.1
 psycopg2==2.8.3
 pycparser==2.19