diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3ee4260..df3ec80 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", pypy-3.10]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", pypy-3.10]
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
diff --git a/pyproject.toml b/pyproject.toml
index 9dd5d1f..04bbde3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -98,7 +98,7 @@ pretty = true
 [tool.tox]
 legacy_tox_ini = """
 [tox]
-envlist = pypy3, py38, py39, py310, py311, py312
+envlist = pypy3, py38, py39, py310, py311, py312, py313
 skip_missing_interpreters = true
 minversion = 4.0
 
diff --git a/tests/dummymodule.py b/tests/dummymodule.py
index e4bf97b..d53c972 100644
--- a/tests/dummymodule.py
+++ b/tests/dummymodule.py
@@ -40,9 +40,17 @@
 P = ParamSpec("P")
 
 
-@no_type_check_decorator
-def dummy_decorator(func):
-    return func
+if sys.version_info <= (3, 13):
+
+    @no_type_check_decorator
+    def dummy_decorator(func):
+        return func
+
+    @dummy_decorator
+    def non_type_checked_decorated_func(x: int, y: str) -> 6:
+        # This is to ensure that we avoid using a local variable that's already in use
+        _call_memo = "foo"  # noqa: F841
+        return "foo"
 
 
 @typechecked
@@ -55,13 +63,6 @@ def non_type_checked_func(x: int, y: str) -> 6:
     return "foo"
 
 
-@dummy_decorator
-def non_type_checked_decorated_func(x: int, y: str) -> 6:
-    # This is to ensure that we avoid using a local variable that's already in use
-    _call_memo = "foo"  # noqa: F841
-    return "foo"
-
-
 @typeguard_ignore
 def non_typeguard_checked_func(x: int, y: str) -> 6:
     return "foo"