diff --git a/requirements.txt b/requirements.txt
index f7f4f26..b47892b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ CommonMark==0.5.4
 docutils==0.14
 idna==2.7
 imagesize==1.1.0
-Jinja2==2.10
+Jinja2==2.11.3
 MarkupSafe==1.0
 packaging==18.0
 purepng==0.2.0