diff --git a/requirements.txt b/requirements.txt
index 0936390..4575ecf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ argon2-cffi==20.1.0
 attrs==20.1.0
 backcall==0.2.0
 bleach==3.1.5
-certifi==2020.6.20
+certifi==2022.12.7
 cffi==1.14.2
 cmdstanpy==0.4.0
 convertdate==2.2.1