diff --git a/web/flask/mega_tutorial/chapter13-language/app/requirements.txt b/web/flask/mega_tutorial/chapter13-language/app/requirements.txt
index 454923d..b5f61b1 100644
--- a/web/flask/mega_tutorial/chapter13-language/app/requirements.txt
+++ b/web/flask/mega_tutorial/chapter13-language/app/requirements.txt
@@ -3,7 +3,7 @@ Babel==2.7.0
 beautifulsoup4==4.8.0
 blinker==1.4
 bs4==0.0.1
-certifi==2019.6.16
+certifi==2022.12.7
 chardet==3.0.4
 Click==7.0
 colorama==0.4.1