diff --git a/requirements_ref.txt b/requirements_ref.txt
index cff1fd8..c1715c1 100644
--- a/requirements_ref.txt
+++ b/requirements_ref.txt
@@ -7,7 +7,7 @@
 alembic==1.4.2            # via flask-migrate
 appdirs==1.4.3            # via -r etc/requirements.in
 attrs==19.3.0             # via jsonschema
-certifi==2020.4.5.1       # via requests
+certifi==2022.12.7       # via requests
 chardet==3.0.4            # via requests
 click==7.1.2              # via clickclick, flask, pip-tools
 clickclick==1.2.2         # via connexion