diff --git a/polygon-yolov5/utils/google_app_engine/additional_requirements.txt b/polygon-yolov5/utils/google_app_engine/additional_requirements.txt
index 2f81c8b..837b566 100644
--- a/polygon-yolov5/utils/google_app_engine/additional_requirements.txt
+++ b/polygon-yolov5/utils/google_app_engine/additional_requirements.txt
@@ -1,4 +1,4 @@
 # add these requirements in your app on top of the existing ones
 pip==19.2
 Flask==1.0.2
-gunicorn==19.9.0
+gunicorn==22.0.0