diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6c2e60c..6ebf370 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
       fail-fast: false
 
     steps:
@@ -19,5 +19,6 @@ jobs:
     - uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
+        allow-prereleases: true
     - run: python -m pip install .
     - run: mkdir testdir && cd testdir && python -m unittest discover -v refcycle