diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 0e7b8d0f..9a95abbe 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -25,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         os: [ubuntu-latest, windows-latest, macos-latest]
         env: [pydantic-v1, pydantic-v2]
     env:
diff --git a/tests/test_param.py b/tests/test_param.py
index 9276865f..05924a75 100644
--- a/tests/test_param.py
+++ b/tests/test_param.py
@@ -42,6 +42,10 @@ UNKNOWN_PARAM = "Unknown parameter"
 
 
 @pytest.mark.anyio
+@pytest.mark.xfail(
+    (3, 13) <= sys.version_info < (3, 14),
+    reason="CPython Bug, see python/cpython#137317, python/cpython#137862",
+)
 async def test_depend(app: App):
     from plugins.param.param_depend import (
         ClassDependency,