diff --git a/requirements.txt b/requirements.txt
index 1682864..b3e598d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ backports-abc==0.4
 certifi==2017.4.17
 docutils==0.12
 imagesize==0.7.1
-Jinja2==2.8
+Jinja2==2.11.3
 livereload==2.4.1
 MarkupSafe==0.23
 pathtools==0.1.2