diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index aec815b72..b3dfa3af1 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -26,6 +26,7 @@ jobs:
           - "3.10"
           - "3.11"
           - "3.12"
+          - "3.13"
         # Additional special cases (see https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#example-adding-configurations)
         include:
           - os: "windows-latest"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 09d00ad3f..1d98d4952 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Start running unit tests in GitHub Actions against Python 3.13 too ([#653](https://github.com/Open-EO/openeo-python-client/issues/653))
+
 ### Changed
 
 - Drop support for Python 3.7 ([#578](https://github.com/Open-EO/openeo-python-client/issues/578))
diff --git a/setup.py b/setup.py
index 2516baf9f..f148e3836 100644
--- a/setup.py
+++ b/setup.py
@@ -102,6 +102,7 @@
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
         "License :: OSI Approved :: Apache Software License",
         "Development Status :: 5 - Production/Stable",
         "Operating System :: OS Independent",