diff --git a/3.9/Dockerfile b/3.9/Dockerfile
index 0002459..d5ff6b2 100644
--- a/3.9/Dockerfile
+++ b/3.9/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.5-slim-buster@sha256:655f71f243ee31eea6774e0b923b990cd400a0689eff049facd2703e57892447
+FROM python:3.9.5-slim-buster@sha256:7783d80eca13fb9f8cfd8b84b27ac09ecc28f52bafdd9b943338b7e29e7741a5
 
 # renovate: datasource=pypi depName=poetry versioning=semver
 ENV POETRY_VERSION 1.1.6