diff --git a/Dockerfile b/Dockerfile
index f7e26efe3..8f5b85698 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.7-slim-buster as base
+FROM python:3.9.9-slim-bullseye as base
 
 # Setup env
 ENV LANG C.UTF-8
diff --git a/docker/Dockerfile.armhf b/docker/Dockerfile.armhf
index f9827774e..16f2aebcd 100644
--- a/docker/Dockerfile.armhf
+++ b/docker/Dockerfile.armhf
@@ -1,4 +1,4 @@
-FROM python:3.7.10-slim-buster as base
+FROM python:3.9.9-slim-bullseye as base
 
 # Setup env
 ENV LANG C.UTF-8