diff --git a/requirements.txt b/requirements.txt
index c401ee6..c638591 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 alabaster==0.7.10
 appnope==0.1.0
 Babel==2.4.0
-certifi==2017.4.17
+certifi==2022.12.7
 chardet==3.0.4
 CommonMark==0.5.4
 decorator==4.0.10