diff --git a/pwned_password_server/requirements.txt b/pwned_password_server/requirements.txt
index 1610994..5402b83 100644
--- a/pwned_password_server/requirements.txt
+++ b/pwned_password_server/requirements.txt
@@ -4,7 +4,7 @@ Click==7.0
 cryptography==2.7
 Flask==1.0.3
 itsdangerous==1.1.0
-Jinja2==2.10.1
+Jinja2==2.11.3
 MarkupSafe==1.1.1
 pycparser==2.19
 pyOpenSSL==19.0.0