diff --git a/3.9/Dockerfile b/3.9/Dockerfile
index beb964f..e4340db 100644
--- a/3.9/Dockerfile
+++ b/3.9/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.16-slim-bullseye@sha256:5cde4e147c4165ad8dbf8a4df9631863766eeb0b79b890fafe6885b3b127af74
+FROM python:3.9.17-slim-bullseye@sha256:5f0192a4f58a6ce99f732fe05e3b3d00f12ae62e183886bca3ebe3d202686c7f
 
 # renovate: datasource=pypi depName=poetry versioning=semver
 ENV POETRY_VERSION 1.5.1