diff --git a/README.rst b/README.rst
index d97f68f7d..d7be18605 100644
--- a/README.rst
+++ b/README.rst
@@ -63,4 +63,4 @@ This includes details on how to use the mock, options, and details of the differ
 .. |Documentation Status| image:: https://readthedocs.org/projects/vws-python-mock/badge/?version=latest
    :target: https://vws-python-mock.readthedocs.io/en/latest/?badge=latest
    :alt: Documentation Status
-.. |minimum-python-version| replace:: 3.12
+.. |minimum-python-version| replace:: 3.13
diff --git a/src/mock_vws/_flask_server/Dockerfile b/src/mock_vws/_flask_server/Dockerfile
index 19d145087..a08e67063 100644
--- a/src/mock_vws/_flask_server/Dockerfile
+++ b/src/mock_vws/_flask_server/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.12-slim AS base
+FROM python:3.13-slim AS base
 # We set this pretend version as we do not have Git in our path, and we do
 # not care enough about having the version correct inside the Docker container
 # to install it.