diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 75a0c81d..e98d52f8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -77,13 +77,6 @@ jobs:
           path: .coverage.*
           if-no-files-found: ignore
 
-      - name: Run CodSpeed benchmarks
-        uses: CodSpeedHQ/action@v2
-        with:
-          token: ${{ secrets.CODSPEED_TOKEN }}
-          run: pytest --codspeed
-        if: matrix.python-version == '3.12'
-
   coverage:
     name: Combine & check coverage.
     runs-on: ubuntu-latest
@@ -122,6 +115,25 @@ jobs:
           path: htmlcov
         if: ${{ failure() }}
 
+
+  codspeed:
+    name: Run CodSpeed benchmarks
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version-file: .python-version-default
+          cache: pip
+      - run: python -Im pip install tox-uv
+
+      - name: Run CodSpeed benchmarks
+        uses: CodSpeedHQ/action@v2
+        with:
+          token: ${{ secrets.CODSPEED_TOKEN }}
+          run: tox run -e codspeed
+
+
   docs:
     name: Build docs & run doctests
     runs-on: ubuntu-latest
diff --git a/tests/test_functional.py b/tests/test_functional.py
index 141b6b58..d4feb6e6 100644
--- a/tests/test_functional.py
+++ b/tests/test_functional.py
@@ -106,12 +106,12 @@ class WithMetaSlots(metaclass=Meta):
 FromMakeClass = attr.make_class("FromMakeClass", ["x"])
 
 
-@pytest.mark.benchmark()
 class TestFunctional:
     """
     Functional tests.
     """
 
+    @pytest.mark.benchmark()
     @pytest.mark.parametrize("cls", [C2, C2Slots])
     def test_fields(self, cls):
         """
@@ -146,6 +146,7 @@ class TestFunctional:
             ),
         ) == attr.fields(cls)
 
+    @pytest.mark.benchmark()
     @pytest.mark.parametrize("cls", [C1, C1Slots])
     def test_asdict(self, cls):
         """
@@ -181,6 +182,7 @@ class TestFunctional:
 
         assert "C3(_x=1)" == repr(C3(x=1))
 
+    @pytest.mark.benchmark()
     @given(booleans(), booleans())
     def test_programmatic(self, slots, frozen):
         """
@@ -338,6 +340,7 @@ class TestFunctional:
         """
         assert Meta == type(cls)
 
+    @pytest.mark.benchmark()
     def test_default_decorator(self):
         """
         Default decorator sets the default and the respective method gets
@@ -541,6 +544,7 @@ class TestFunctional:
         assert "itemgetter" == attr.fields(C).itemgetter.name
         assert "x" == attr.fields(C).x.name
 
+    @pytest.mark.benchmark()
     def test_auto_exc(self, slots, frozen):
         """
         Classes with auto_exc=True have a Exception-style __str__, compare and
@@ -735,6 +739,7 @@ class TestFunctional:
         assert "_setattr('y', y)" in src
         assert object.__setattr__ != D.__setattr__
 
+    @pytest.mark.benchmark()
     def test_unsafe_hash(self, slots):
         """
         attr.s(unsafe_hash=True) makes a class hashable.
diff --git a/tox.ini b/tox.ini
index e2dd63e4..f6c94b4a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -48,6 +48,17 @@ commands =
     coverage report
 
 
+[testenv:codspeed]
+extras = tests
+pass_env =
+    CODSPEED_TOKEN
+    CODSPEED_ENV
+    ARCH
+    PYTHONHASHSEED
+    PYTHONMALLOC
+commands = pytest --codspeed -n auto
+
+
 [testenv:docs]
 # Keep base_python in-sync with ci.yml/docs and .readthedocs.yaml.
 base_python = py312