diff --git a/docker/Dockerfile b/docker/Dockerfile
index 39e3e97..3f2c182 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -3,7 +3,7 @@
 # SPDX-FileCopyrightText: 2020-present Open Networking Foundation <info@opennetworking.org>
 # SPDX-License-Identifier: Apache-2.0
 #
-FROM python:3.6-slim-buster
+FROM python:3.9-slim-buster
 
 RUN useradd -ms /bin/bash ubuntu
 USER ubuntu