diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 10ca5f4..57f1e29 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -31,6 +31,8 @@ jobs:
             toxenv: py313
           - python-version: "3.14"
             toxenv: py314
+          - python-version: "3.15-dev"
+            toxenv: py315
           - python-version: "3.x"
             toxenv: no-flask-caching
           - python-version: "3.12"