diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index be8c036d..4b3a061b 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -13,17 +13,19 @@ permissions:
 
 jobs:
   build:
-    name: Python ${{ matrix.python-version }} - numpy ${{ matrix.numpy-version }}
+    name: Python ${{ matrix.python-version }} - NumPy ${{ matrix.numpy-major }}.x
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
-        numpy-version: [">=1.25,<2", ">=2"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "3.14t"]
+        numpy-major: ["1", "2"]
         exclude:
           - python-version: "3.13" # numpy<2 is not supported on 3.13+
-            numpy-version: ">=1.25,<2"
+            numpy-major: "1"
           - python-version: "3.14"
-            numpy-version: ">=1.25,<2"
+            numpy-major: "1"
+          - python-version: "3.14t"
+            numpy-major: "1"
 
     steps:
     - uses: actions/checkout@v3
@@ -34,7 +36,12 @@ jobs:
     - name: Install test dependencies
       run: |
         uv sync --extra dev
-        uv pip install "numpy${{ matrix.numpy-version}}"
+    - name: Install NumPy 1.x compatibility dependencies
+      if: matrix.numpy-major == '1'
+      run: uv pip install "numpy>=1.25,<2" "scipy<1.18"  # scipy>=1.18 is not supported on numpy<2
+    - name: Install NumPy 2.x compatibility dependencies
+      if: matrix.numpy-major == '2'
+      run: uv pip install "numpy>=2"
     - name: Run pytest
       run: uv run --no-sync pytest --cov-report xml --cov=bayes_opt/
     - name: Upload coverage to Codecov
diff --git a/pyproject.toml b/pyproject.toml
index 46b9dae7..78b2f9e1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,15 +16,20 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: Free Threading"
 ]
 dependencies = [
     "colorama>=0.4.6",
     "numpy>=1.25; python_version<'3.13'",
-    "numpy>=2.1.3; python_version>='3.13'",
-    "packaging>=20.0",
-    "scikit-learn>=1.0.0",
+    "numpy>=2.1.3; python_version>='3.13' and python_version<'3.14'",
+    "numpy>=2.3.0; python_version>='3.14'",
+    "packaging>=20.0; python_version<'3.14'",
+    "packaging>=26.0; python_version>='3.14'",
+    "scikit-learn>=1.0.0; python_version<'3.14'",
+    "scikit-learn>=1.8.0; python_version>='3.14'",
     "scipy>=1.0.0; python_version<'3.13'",
-    "scipy>=1.14.1; python_version>='3.13'",
+    "scipy>=1.14.1; python_version>='3.13' and python_version<'3.14'",
+    "scipy>=1.17.0; python_version>='3.14'",
 ]
 
 [project.optional-dependencies]
diff --git a/tests/test_notebooks_run.py b/tests/test_notebooks_run.py
index 29ce4e33..f1fbf6ea 100644
--- a/tests/test_notebooks_run.py
+++ b/tests/test_notebooks_run.py
@@ -16,7 +16,7 @@
 
 
 # get all notebooks:
-@pytest.mark.parametrize("notebook", this_file_loc.with_name("examples").glob("*.ipynb"))
+@pytest.mark.parametrize("notebook", sorted(this_file_loc.with_name("examples").glob("*.ipynb")))
 def test_all_notebooks_run(notebook: Path):
     as_string = str(notebook)
     if any([nb in as_string for nb in _NOTEBOOKS_NOT_TO_RUN]):