diff --git a/docker/docker-bootstrap.sh b/docker/docker-bootstrap.sh
index 2f466fea845..04709396cf9 100755
--- a/docker/docker-bootstrap.sh
+++ b/docker/docker-bootstrap.sh
@@ -72,7 +72,7 @@ case "${1}" in
     ;;
   app)
     echo "Starting web app (using development server)..."
-    flask run -p $PORT --reload --debugger --host=0.0.0.0
+    flask run -p $PORT --reload --debugger --without-threads --host=0.0.0.0
     ;;
   app-gunicorn)
     echo "Starting web app..."