diff --git a/requirements.txt b/requirements.txt
index fb46484..a305a84 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ coverage==4.5.1
 docutils==0.14
 idna==2.6
 imagesize==1.0.0
-Jinja2==2.10
+Jinja2==2.11.3
 MarkupSafe==1.0
 packaging==17.1
 Pygments==2.2.0