diff --git a/Dockerfile b/Dockerfile
index 1a1dbafb..916ebb1a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # https://hub.docker.com/_/python/
-FROM python:3.9.0-slim-buster
+FROM python:3.9-slim-buster
 
 WORKDIR /opt/macbre/index-digest