diff --git a/3.9/Dockerfile b/3.9/Dockerfile
index 13424ef..d7fadee 100644
--- a/3.9/Dockerfile
+++ b/3.9/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.1-slim-buster@sha256:2364a510309d1871c644ce778709bbfd611b581924c849345057db600f48260a
+FROM python:3.9.1-slim-buster@sha256:8ea936ea1ad3da2ac2b500f9f0ed9eb282c4d7e89b821764eb699cbcf5592311
 
 # renovate: datasource=pypi depName=poetry versioning=semver
 ENV POETRY_VERSION v1.1.4