diff --git a/requirements.txt b/requirements.txt
index 233eaef0..06108316 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ Flask-Assets==0.12
 Jinja2==2.9.6
 MarkupSafe==1.0
 Werkzeug==0.12.2
-certifi==2017.4.17
+certifi==2023.7.22
 chardet==3.0.3
 click==6.7
 cssmin==0.2.0