diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index 77d2fcb..b641fbf 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-11, windows-2019]
+        os: [windows-2019]
     steps:
       - uses: actions/checkout@v3
 
diff --git a/mrobpy/pyproject.toml b/mrobpy/pyproject.toml
index 2b93823..dd392cb 100644
--- a/mrobpy/pyproject.toml
+++ b/mrobpy/pyproject.toml
@@ -3,7 +3,7 @@ build = "cp*"
 archs = "auto64"
 before-build = "bash tools/unix-wheels.sh"
 build-verbosity = 1
-test-requires = "pytest<=6.2.5 numpy<2.0.0"
+test-requires = ["pytest", "numpy<=2.0.0"]
 test-command = "pytest {package}/tests"
 
 [tool.cibuildwheel.linux]
diff --git a/mrobpy/setup.cfg b/mrobpy/setup.cfg
index ecc1d83..e3c463d 100644
--- a/mrobpy/setup.cfg
+++ b/mrobpy/setup.cfg
@@ -29,7 +29,7 @@ license = Apache-2.0
 license_files = LICENSE.md
 
 [options]
-python_requires = >= 3.7
+python_requires = >= 3.8
 
 [options.package_data]
 * =