diff --git a/sys/src/requirements.txt b/sys/src/requirements.txt
index 42697f1..41b84d5 100644
--- a/sys/src/requirements.txt
+++ b/sys/src/requirements.txt
@@ -10,7 +10,7 @@ google-auth-oauthlib==0.2.0
 httplib2==0.12.0
 idna==2.8
 itsdangerous==1.1.0
-Jinja2==2.10
+Jinja2==2.11.3
 MarkupSafe==1.1.0
 oauth2client==4.1.3
 oauthlib==2.1.0