diff --git a/requirements.txt b/requirements.txt
index b6e44c6..75a7f39 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ chardet==3.0.4
 docutils==0.14
 idna==2.8
 imagesize==1.1.0
-Jinja2==2.10
+Jinja2==2.11.3
 livereload==2.5.0
 MarkupSafe==1.1.0
 packaging==18.0