diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 92ec7c4..e45ea11 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.12", "3.13"]
         os: [ "ubuntu-latest"]
 
     steps:
@@ -51,7 +51,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.11"]
+        python-version: ["3.13"]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a04349..37d4f19 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
   longer be passed by position ([#99](https://github.com/mathause/filefinder/pull/99)).
 - `FileFinder` now raises an error if an invalid `"{placeholder}"` is used
    ([#99](https://github.com/mathause/filefinder/pull/99)).
+- Explicitly test on python 3.13 ([#103](https://github.com/mathause/filefinder/pull/103)).
 - Drop support for python 3.9 ([#102](https://github.com/mathause/filefinder/pull/102)).
 
 ## v0.3.0 - 27.03.2024
diff --git a/setup.cfg b/setup.cfg
index 2904218..e92c7d1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -17,6 +17,7 @@ classifiers =
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
+    Programming Language :: Python :: 3.13
 
 [options]
 packages = find:
diff --git a/tox.ini b/tox.ini
index 23ff799..77c1ff0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 # content of: tox.ini , put in same dir as setup.py
 [tox]
-envlist = py10,py311,py312
+envlist = py10,py312,py313
 
 [testenv]
 # install pytest in the virtualenv where commands will be executed