diff --git a/requirements.txt b/requirements.txt
index 5f93270..6cddc12 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ docutils==0.14
 funcsigs==1.0.2
 idna==2.6
 imagesize==0.7.1
-Jinja2==2.9.6
+Jinja2==2.11.3
 MarkupSafe==1.0
 mock==2.0.0
 numpy==1.13.1