diff --git a/3.9/Dockerfile b/3.9/Dockerfile
index 57c4cb4..22806aa 100644
--- a/3.9/Dockerfile
+++ b/3.9/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.19-slim-bookworm@sha256:69e712dbe4c4a166527cbf69374533125cfb6ee93a5e39031a0191c741d386d7
+FROM python:3.9.20-slim-bookworm@sha256:c18e51b98c645198ed42066a61807aa22c66d66e913446fb306519f25ccebb2c
 
 # renovate: datasource=pypi depName=poetry versioning=semver
 ENV POETRY_VERSION 1.8.3