diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9f82262..9b0cee1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -47,6 +47,22 @@ jobs:
           - version: "3.15t"
         pytest-version:
           - ">=8.1.1"
+        # Older pytest versions only on the latest Python
+        include:
+          # Before pytest.register_fixture (private _arg2fixturedefs override)
+          - config: headless
+            python: { version: "3.15" }
+            pytest-version: "~=9.0.0"
+          - config: pytest-benchmark-5
+            python: { version: "3.15" }
+            pytest-version: "~=9.0.0"
+          # Before 8.1.1 (getfixturedefs takes a nodeid)
+          - config: headless
+            python: { version: "3.15" }
+            pytest-version: "~=8.0.0"
+          - config: pytest-benchmark-4
+            python: { version: "3.15" }
+            pytest-version: "~=8.0.0"
 
     steps:
       - uses: actions/checkout@v5
@@ -57,7 +73,7 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: "${{ matrix.python.version }}"
-      - if: matrix.config == 'valgrind' || matrix.config == 'pytest-benchmark'
+      - if: matrix.config == 'valgrind' || startsWith(matrix.config, 'pytest-benchmark')
         name: Install valgrind
         run: |
           sudo apt-get update
diff --git a/src/pytest_codspeed/plugin.py b/src/pytest_codspeed/plugin.py
index 2b50a8b..6b21a89 100644
--- a/src/pytest_codspeed/plugin.py
+++ b/src/pytest_codspeed/plugin.py
@@ -23,6 +23,7 @@
 from pytest_codspeed.instruments import MeasurementMode, get_instrument_from_mode
 from pytest_codspeed.utils import (
     BEFORE_PYTEST_8_1_1,
+    HAS_PYTEST_REGISTER_FIXTURE,
     IS_PYTEST_BENCHMARK_INSTALLED,
     IS_PYTEST_SPEED_INSTALLED,
     get_environment_metadata,
@@ -187,6 +188,8 @@ def pytest_plugin_registered(plugin, manager: pytest.PytestPluginManager):
     Patch the benchmark fixture to use the codspeed one if codspeed is enabled and an
     alternative benchmark fixture is available
     """
+    if HAS_PYTEST_REGISTER_FIXTURE:
+        return  # handled in pytest_sessionstart
     if (IS_PYTEST_BENCHMARK_INSTALLED or IS_PYTEST_SPEED_INSTALLED) and isinstance(
         plugin, FixtureManager
     ):
@@ -210,6 +213,26 @@ def pytest_plugin_registered(plugin, manager: pytest.PytestPluginManager):
             fixture_manager._arg2fixturedefs["benchmark"] = codspeed_benchmark_fixtures
 
 
+def _benchmark_compat(codspeed_benchmark, request: pytest.FixtureRequest):
+    return codspeed_benchmark
+
+
+@pytest.hookimpl(trylast=True)
+def pytest_sessionstart(session: pytest.Session):
+    """
+    Override the benchmark fixture of pytest-benchmark/pytest-speed with the codspeed
+    one, using the public API available since pytest 9.1
+    """
+    if HAS_PYTEST_REGISTER_FIXTURE and (
+        IS_PYTEST_BENCHMARK_INSTALLED or IS_PYTEST_SPEED_INSTALLED
+    ):
+        codspeed_plugin = session.config.pluginmanager.get_plugin(PLUGIN_NAME)
+        if codspeed_plugin is not None and codspeed_plugin.is_codspeed_enabled:
+            pytest.register_fixture(
+                name="benchmark", func=_benchmark_compat, node=session
+            )
+
+
 @pytest.hookimpl(trylast=True)
 def pytest_report_header(config: pytest.Config):
     plugin = get_plugin(config)
diff --git a/src/pytest_codspeed/utils.py b/src/pytest_codspeed/utils.py
index 6c24143..95b9256 100644
--- a/src/pytest_codspeed/utils.py
+++ b/src/pytest_codspeed/utils.py
@@ -19,6 +19,8 @@
 IS_PYTEST_BENCHMARK_INSTALLED = importlib.util.find_spec("pytest_benchmark") is not None
 IS_PYTEST_SPEED_INSTALLED = importlib.util.find_spec("pytest_speed") is not None
 BEFORE_PYTEST_8_1_1 = pytest.version_tuple < (8, 1, 1)
+# Public API since pytest 9.1, required since 9.2 removed `_arg2fixturedefs`
+HAS_PYTEST_REGISTER_FIXTURE = hasattr(pytest, "register_fixture")
 SUPPORTS_PERF_TRAMPOLINE = sysconfig.get_config_var("PY_HAVE_PERF_TRAMPOLINE") == 1
 
 
diff --git a/tests/conftest.py b/tests/conftest.py
index e8a5625..c03d074 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -23,6 +23,11 @@
 skip_with_pytest_benchmark = pytest.mark.skipif(
     IS_PYTEST_BENCHMARK_INSTALLED, reason="pytest_benchmark installed"
 )
+xfail_pytest_benchmark_on_pytest_9_2 = pytest.mark.xfail(
+    IS_PYTEST_BENCHMARK_INSTALLED and pytest.version_tuple >= (9, 2),
+    reason="pytest-benchmark is incompatible with pytest 9.2 (Node._nodeid removal)",
+    strict=False,
+)
 if IS_PYTEST_BENCHMARK_INSTALLED:
     pytest_plugins.append("pytest_benchmark")
     print(
diff --git a/tests/test_pytest_plugin.py b/tests/test_pytest_plugin.py
index 452e9da..a266649 100644
--- a/tests/test_pytest_plugin.py
+++ b/tests/test_pytest_plugin.py
@@ -6,6 +6,7 @@
     skip_with_perf_trampoline,
     skip_without_pytest_benchmark,
     skip_without_valgrind,
+    xfail_pytest_benchmark_on_pytest_9_2,
 )
 
 
@@ -119,6 +120,7 @@ def test_child(self):
     )
 
 
+@xfail_pytest_benchmark_on_pytest_9_2
 def test_plugin_disabled(pytester: pytest.Pytester) -> None:
     pytester.copy_example("tests/examples/test_addition_fixture.py")
     result = pytester.runpytest()
@@ -191,6 +193,7 @@ def test_another_useless_thing():
     )
 
 
+@xfail_pytest_benchmark_on_pytest_9_2
 @skip_without_pytest_benchmark
 def test_pytest_benchmark_compatibility(pytester: pytest.Pytester) -> None:
     pytester.makepyfile(