diff --git a/requirements.txt b/requirements.txt
index 425b39d..228bb7f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ cycler==0.10.0
 docutils==0.14
 idna==2.8
 imagesize==1.1.0
-Jinja2==2.10
+Jinja2==2.11.3
 jplephem==2.8
 kiwisolver==1.0.1
 m2r==0.2.1