diff --git a/nodemcuv2/basicproject01/linebot/requirements.txt b/nodemcuv2/basicproject01/linebot/requirements.txt
index 33876a1..45aea0d 100644
--- a/nodemcuv2/basicproject01/linebot/requirements.txt
+++ b/nodemcuv2/basicproject01/linebot/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2018.10.15
+certifi==2022.12.7
 chardet==3.0.4
 Click==7.0
 Flask==1.0.2