diff --git a/gdg-cloud-devfest-bkk-2020/requirements.txt b/gdg-cloud-devfest-bkk-2020/requirements.txt
index a820daa..68cd47d 100644
--- a/gdg-cloud-devfest-bkk-2020/requirements.txt
+++ b/gdg-cloud-devfest-bkk-2020/requirements.txt
@@ -13,7 +13,7 @@ backports.entry-points-selectable==1.1.0
 blinker==1.4
 cachetools==4.2.2
 cattrs==1.5.0
-certifi==2021.5.30
+certifi==2022.12.7
 cffi==1.14.6
 charset-normalizer==2.0.4
 click==7.1.2