diff --git a/src/frontend_celery/start_webapp.sh b/src/frontend_celery/start_webapp.sh
index 9bd1f6b4..a7f91b75 100755
--- a/src/frontend_celery/start_webapp.sh
+++ b/src/frontend_celery/start_webapp.sh
@@ -69,6 +69,6 @@ then
    logsdir=$ROOT/logs
    mkdir -p $logsdir/gunicorn-access-logs
    mkdir -p $logsdir/gunicorn-error-logs
-   gunicorn -b $HOST:$PORT -w 4 'webapp:create_app()' --access-logfile $logsdir/gunicorn-access-logs/access.log --error-logfile $logsdir/gunicorn-error-logs/error.log # heredivar.uni-koeln.de:8000
+   gunicorn -b $HOST:$PORT -k 'gevent' -w 4 'webapp:create_app()' --access-logfile $logsdir/gunicorn-access-logs/access.log --error-logfile $logsdir/gunicorn-error-logs/error.log # heredivar.uni-koeln.de:8000
    #gunicorn -b SRV018.img.med.uni-tuebingen.de:8001 -w 1 'webapp:create_app()'
-fi
\ No newline at end of file
+fi