diff --git a/requirements.txt b/requirements.txt
index 2da398c..af2f705 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ chardet==3.0.4
 docutils==0.14
 idna==2.7
 imagesize==1.0.0
-Jinja2==2.10
+Jinja2==2.11.3
 livereload==2.5.2
 MarkupSafe==1.0
 packaging==17.1