diff --git a/Day61-65/code/hello-tornado/requirements.txt b/Day61-65/code/hello-tornado/requirements.txt
index 619660c..154ae09 100644
--- a/Day61-65/code/hello-tornado/requirements.txt
+++ b/Day61-65/code/hello-tornado/requirements.txt
@@ -3,7 +3,7 @@ aiomysql==0.0.20
 asn1crypto==0.24.0
 async-timeout==3.0.1
 attrs==19.1.0
-certifi==2019.3.9
+certifi==2022.12.7
 cffi==1.12.2
 chardet==3.0.4
 cryptography==2.6.1