diff --git a/flask-connexion-rest-part-4/requirements.txt b/flask-connexion-rest-part-4/requirements.txt
index c9efff71aa..08a7d4b288 100644
--- a/flask-connexion-rest-part-4/requirements.txt
+++ b/flask-connexion-rest-part-4/requirements.txt
@@ -17,7 +17,7 @@ marshmallow-sqlalchemy==0.15.0
 openapi-spec-validator==0.2.4
 pathlib==1.0.1
 PyYAML==4.2b4
-requests==2.21.0
+requests==2.31.0
 six==1.12.0
 SQLAlchemy==1.2.17
 swagger-ui-bundle==0.0.3