diff --git a/lti/lti-hello/requirements.txt b/lti/lti-hello/requirements.txt
index c48b713..3eaa8b6 100644
--- a/lti/lti-hello/requirements.txt
+++ b/lti/lti-hello/requirements.txt
@@ -1,7 +1,7 @@
 asn1crypto==0.24.0
 cffi==1.12.3
 Click==7.0
-cryptography==3.3.2
+cryptography==39.0.1
 enum34==1.1.6
 Flask==1.0.3
 httplib2==0.19.0