diff --git a/requirements.txt b/requirements.txt
index b8a4369..7607a39 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ appdirs==1.4.3
 backports-abc==0.5
 certifi==2017.4.17
 click==6.7
-Jinja2==2.9.6
+Jinja2==2.11.3
 livereload==2.5.1
 Markdown==2.6.8
 MarkupSafe==1.0