diff --git a/requirements.txt b/requirements.txt
index fc03ba5..d82bd3b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,4 +7,4 @@ flask-mysqldb==0.2.0
 bcrypt == 3.1.7
 requests==2.23.0
 http-ece==1.1.0
-cryptography==2.8
+cryptography==2.9