diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8083b60..c4543b2 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,17 +16,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.14t"]
 
     name: Tests with Python ${{ matrix.python-version }} on Linux
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
         with:
           path: main
 
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v6
         with:
-          python-version: ${{ matrix.python-version }}-dev
+          python-version: ${{ matrix.python-version }}
 
       - name: Checkout Austin development branch
         uses: actions/checkout@master
@@ -68,17 +68,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.14t"]
 
     name: Tests with Python ${{ matrix.python-version }} on MacOS
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
         with:
           path: main
 
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v6
         with:
-          python-version: ${{ matrix.python-version }}-dev
+          python-version: ${{ matrix.python-version }}
 
       - name: Checkout Austin development branch
         uses: actions/checkout@master
@@ -113,17 +113,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.14t"]
 
     name: Tests with Python ${{ matrix.python-version }} on Windows
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
         with:
           path: main
 
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v6
         with:
-          python-version: ${{ matrix.python-version }}-dev
+          python-version: ${{ matrix.python-version }}
 
       - name: Checkout Austin development branch
         uses: actions/checkout@master
diff --git a/pyproject.toml b/pyproject.toml
index 6bd082b..ff28bf8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -78,7 +78,7 @@ dependencies = [
 tests = "pytest --cov=austin --cov-report=term-missing --cov-report=xml {args}"
 
 [[tool.hatch.envs.tests.matrix]]
-python = ["3.10", "3.11", "3.12", "3.13", "3.14"]
+python = ["3.10", "3.11", "3.12", "3.13", "3.14", "3.14t"]
 
 [tool.hatch.envs.checks]
 python = "3.13"
diff --git a/test/test_aio.py b/test/test_aio.py
index 064ef66..193160c 100644
--- a/test/test_aio.py
+++ b/test/test_aio.py
@@ -23,6 +23,7 @@
 
 import asyncio
 import sys
+import sysconfig
 from pathlib import Path
 from unittest.mock import MagicMock
 
@@ -59,14 +60,16 @@ async def on_metadata(self, metadata: AustinMetadata) -> None:
     async def on_terminate(self):
         data = self._meta
         assert "duration" in data
-        assert "errors" in data
-        assert "sampling" in data
-        assert "saturation" in data
+        if sysconfig.get_config_var("Py_GIL_DISABLED") is False:
+            assert "errors" in data
+            assert "sampling" in data
+            assert "saturation" in data
         self._terminate = True
 
     def assert_callbacks_called(self):
         assert self._metadata
-        assert self._sample_received
+        if sysconfig.get_config_var("Py_GIL_DISABLED") is False:
+            assert self._sample_received
         assert self._terminate
 
 
@@ -109,7 +112,7 @@ async def sample_callback(data):
             "100",
             "python",
             "-c",
-            "[i for i in range(10000000)]",
+            "[i for i in range(100000000)]",
         ]
     )
     await asyncio.wait_for(austin.wait(), 30)