diff --git a/requirements.txt b/requirements.txt
index 1ecc6bd..41555b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ future==0.17.1
 gunicorn==19.9.0
 idna==2.8
 itsdangerous==1.1.0
-Jinja2==2.10.1
+Jinja2==2.11.3
 line-bot-sdk==1.14.0
 MarkupSafe==1.1.1
 requests==2.22.0