diff --git a/nodemcuv2/basicproject01/linebot/requirements.txt b/nodemcuv2/basicproject01/linebot/requirements.txt
index 33876a1..0cfec91 100644
--- a/nodemcuv2/basicproject01/linebot/requirements.txt
+++ b/nodemcuv2/basicproject01/linebot/requirements.txt
@@ -5,7 +5,7 @@ Flask==1.0.2
 future==0.17.1
 idna==2.7
 itsdangerous==1.1.0
-Jinja2==2.10
+Jinja2==2.11.3
 line-bot-sdk==1.8.0
 MarkupSafe==1.0
 microgear==1.2.7