diff --git a/requirements.txt b/requirements.txt
index cad7640..b124ddc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ appnope==0.1.0
 backcall==0.1.0
 backports.functools-lru-cache==1.5
 bleach==2.1.3
-certifi==2018.4.16
+certifi==2023.7.22
 chardet==3.0.4
 cheroot==6.2.4
 CherryPy==15.0.0