diff --git a/hello/requirements.txt b/hello/requirements.txt
index 74c193a..0a1c58f 100644
--- a/hello/requirements.txt
+++ b/hello/requirements.txt
@@ -1,6 +1,6 @@
 alembic==0.9.3
 click==6.7
-cryptography==1.7.1
+cryptography==3.2
 enum34==1.1.6
 Flask==0.12.2
 Flask-Migrate==2.0.4