diff --git a/tornado/requirements.txt b/tornado/requirements.txt
index 0911e14..7acb5d2 100644
--- a/tornado/requirements.txt
+++ b/tornado/requirements.txt
@@ -1,2 +1,2 @@
-certifi==2020.4.5.1
+certifi==2022.12.7
 tornado==6.0.4