diff --git a/material/requirements.txt b/material/requirements.txt
index b949b46..5256805 100644
--- a/material/requirements.txt
+++ b/material/requirements.txt
@@ -1,6 +1,6 @@
 appnope==0.1.0
 backports.ssl-match-hostname==3.4.0.2
-certifi==2015.9.6.2
+certifi==2022.12.7
 decorator==4.0.2
 funcsigs==0.4
 functools32==3.2.3.post2