diff --git a/3.9/Dockerfile b/3.9/Dockerfile
index ce2521e..9f55f1d 100644
--- a/3.9/Dockerfile
+++ b/3.9/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.6-slim-buster@sha256:b7e533f465f22a1d8e170a51c01449255d38b413b464bb52aebd65f4e41fa156
+FROM python:3.9.6-slim-buster@sha256:2c018e29a8eada75e855d78641adda978a2c0a035fd928e281e1240144e8a337
 
 # renovate: datasource=pypi depName=poetry versioning=semver
 ENV POETRY_VERSION 1.1.7