diff --git a/requirements.txt b/requirements.txt
index 5d836d5..2416d3d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 alabaster==0.7.10
 Babel==2.4.0
-certifi==2017.4.17
+certifi==2022.12.7
 chardet==3.0.4
 CommonMark==0.5.4
 docutils==0.13.1