diff --git a/requirements.txt b/requirements.txt
index d3fd864..d6f9a31 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ Jinja2==2.9.6
 MarkupSafe==1.0
 RPi.GPIO==0.6.3
 Werkzeug==0.15.3
-certifi==2017.7.27.1
+certifi==2022.12.7
 chardet==3.0.4
 click==6.7
 gpiozero==1.4.0