diff --git a/DeepIE3D_Backend/requirements.txt b/DeepIE3D_Backend/requirements.txt
index 7b7ea88..682c6d7 100644
--- a/DeepIE3D_Backend/requirements.txt
+++ b/DeepIE3D_Backend/requirements.txt
@@ -2,4 +2,4 @@ Flask>=1.0.2
 torch==1.0.1
 Flask-Compress>=1.4.0
 numpy>=1.16.2
-gunicorn==19.5.0
+gunicorn==22.0.0