diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8d055f7cc..10826ac6eb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,12 @@
 This changelog only contains breaking and/or significant changes manually introduced to this repository (using Pull Requests).
 All image manifests can be found in [the wiki](https://github.com/jupyter/docker-stacks/wiki).
 
+## UNRELEASED
+
+Affected: all images.
+
+- **Breaking:** `docker-stacks-foundation`: switch to Python 3.13 ([#2163](https://github.com/jupyter/docker-stacks/pull/2163)).
+
 ## 2024-12-03
 
 Affected: all images.
diff --git a/images/docker-stacks-foundation/Dockerfile b/images/docker-stacks-foundation/Dockerfile
index 270957d65e..2b42899d33 100644
--- a/images/docker-stacks-foundation/Dockerfile
+++ b/images/docker-stacks-foundation/Dockerfile
@@ -89,7 +89,7 @@ RUN echo "auth requisite pam_deny.so" >> /etc/pam.d/su && \
 USER ${NB_UID}
 
 # Pin the Python version here, or set it to "default"
-ARG PYTHON_VERSION=3.12
+ARG PYTHON_VERSION=3.13
 
 # Setup work directory for backward-compatibility
 RUN mkdir "/home/${NB_USER}/work" && \
diff --git a/tests/docker-stacks-foundation/test_python_version.py b/tests/docker-stacks-foundation/test_python_version.py
index bf81df8356..4ddd8a747c 100644
--- a/tests/docker-stacks-foundation/test_python_version.py
+++ b/tests/docker-stacks-foundation/test_python_version.py
@@ -5,7 +5,7 @@
 from tests.conftest import TrackedContainer
 
 LOGGER = logging.getLogger(__name__)
-EXPECTED_PYTHON_VERSION = "3.12"
+EXPECTED_PYTHON_VERSION = "3.13"
 
 
 def test_python_version(container: TrackedContainer) -> None: