diff --git a/requirements.txt b/requirements.txt
index d108cf1..b0c30c9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ click==6.7
 Flask==0.12.1
 idna==2.5
 itsdangerous==0.24
-Jinja2==2.9.6
+Jinja2==2.11.3
 MarkupSafe==1.0
 numpy==1.13.0
 packaging==16.8