diff --git a/3.9/Dockerfile b/3.9/Dockerfile
index 5e070ba..f962381 100644
--- a/3.9/Dockerfile
+++ b/3.9/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.1-slim-buster@sha256:50328b4efe5ff8ef8bb2e62e088a4cefeace39062c483c04987f5820e7cf73b1
+FROM python:3.9.1-slim-buster@sha256:2364a510309d1871c644ce778709bbfd611b581924c849345057db600f48260a
 
 # renovate: datasource=pypi depName=poetry versioning=semver
 ENV POETRY_VERSION v1.1.4