diff --git a/scripts/install/centos.sh b/scripts/install/centos.sh
index 867479e07..4a8375a4d 100755
--- a/scripts/install/centos.sh
+++ b/scripts/install/centos.sh
@@ -112,15 +112,14 @@ else
     cd /www/server/mdserver-web && pip3 install -r /www/server/mdserver-web/requirements.txt
 fi
 
+pip3 install gunicorn==20.1.0
 pip3 install gevent==21.1.2
 pip3 install gevent-websocket==0.10.1
 pip3 install requests==2.20.0
-pip3 install flask_caching flask_session
 pip3 install flask_socketio psutil pymongo
 
 
 
-
 cd /www/server/mdserver-web && ./cli.sh start
 sleep 5
 
diff --git a/scripts/update/centos.sh b/scripts/update/centos.sh
index a3dfe6230..5db0d0173 100755
--- a/scripts/update/centos.sh
+++ b/scripts/update/centos.sh
@@ -37,11 +37,10 @@ else
     cd /www/server/mdserver-web && pip3 install -r /www/server/mdserver-web/requirements.txt
 fi
 
-
+pip3 install gunicorn==20.1.0
 pip3 install gevent==21.1.2
 pip3 install gevent-websocket==0.10.1
 pip3 install requests==2.20.0
-pip3 install flask_caching flask_session
 pip3 install flask_socketio psutil pymongo