diff --git a/.github/workflows/build_wheels.yml b/.github/workflows/build_wheels.yml
index cbed8b6c..67f7ad8d 100644
--- a/.github/workflows/build_wheels.yml
+++ b/.github/workflows/build_wheels.yml
@@ -244,8 +244,27 @@ jobs:
         name: wheels
         path: dist/opencv*.tar.gz
 
+  test_release_opencv_python:
+    if: github.event_name == 'release' && github.event.release.prerelease
+    needs: [build, build-windows-x86_64, build_sdist]
+    runs-on: ubuntu-latest
+    environment: test-opencv-python-release
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - uses: actions/download-artifact@v2
+        with:
+          name: wheels
+          path: wheelhouse/
+
+      - name: Upload all wheels
+        run: |
+          python -m pip install twine
+          python -m twine upload --repository testpypi -u ${{ secrets.PYPI_USERNAME }} -p ${{ secrets.PYPI_PASSWORD }} --skip-existing wheelhouse/opencv_*
+
   release_opencv_python:
-    if: startsWith(github.ref, 'refs/tags/v')
+    if: github.event_name == 'release' && !github.event.release.prerelease
     needs: [build, build-windows-x86_64, build_sdist]
     runs-on: ubuntu-latest
     environment: opencv-python-release
@@ -257,6 +276,7 @@ jobs:
         with:
           name: wheels
           path: wheelhouse/
+
       - name: Upload wheels for opencv_python
         run: |
           python -m pip install twine
@@ -273,7 +293,6 @@ jobs:
           python -m twine upload -u ${{ secrets.OPENCV_PYTHON_HEADLESS_USERNAME }} -p ${{ secrets.OPENCV_PYTHON_HEADLESS_PASSWORD }} --skip-existing wheelhouse/opencv_python_headless-*
 
       - name: Upload wheels for opencv_contrib_python_headless
-
         run: |
           python -m pip install twine
           python -m twine upload -u ${{ secrets.OPENCV_CONTRIB_PYTHON_HEADLESS_USERNAME }} -p ${{ secrets.OPENCV_CONTRIB_PYTHON_HEADLESS_PASSWORD }} --skip-existing wheelhouse/opencv_contrib_python_headless-*
diff --git a/pyproject.toml b/pyproject.toml
index d7c5527d..07bcc4bb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,6 +3,7 @@ requires = [
   "setuptools", "wheel", "scikit-build", "cmake", "pip",
   "numpy==1.13.3; python_version=='3.6' and platform_machine != 'aarch64'",
   "numpy==1.19.3; python_version>='3.6' and sys_platform == 'linux' and platform_machine == 'aarch64'",
+  "numpy==1.20.1; python_version>='3.6' and sys_platform == 'darwin' and platform_machine == 'aarch64'",
   "numpy==1.14.5; python_version=='3.7' and platform_machine != 'aarch64'",
   "numpy==1.17.3; python_version=='3.8' and platform_machine != 'aarch64'",
   "numpy==1.19.3; python_version>='3.9' and platform_machine != 'aarch64'"
diff --git a/setup.py b/setup.py
index 67f22c60..a3265206 100644
--- a/setup.py
+++ b/setup.py
@@ -31,10 +31,14 @@ def main():
     if sys.version_info[:2] >= (3, 9):
         minimum_supported_numpy = "1.19.3"
 
-    # arm64 is a special case
-    if sys.version_info[:2] >= (3, 6) and platform.machine() == "aarch64":
+    # linux arm64 is a special case
+    if sys.platform.startswith("linux") and sys.version_info[:2] >= (3, 6) and platform.machine() == "aarch64":
         minimum_supported_numpy = "1.19.3"
 
+    # macos arm64 is a special case
+    if sys.platform == "darwin" and sys.version_info[:2] >= (3, 6) and platform.machine() == "aarch64":
+        minimum_supported_numpy = "1.20.1"
+
     numpy_version = "numpy>=%s" % minimum_supported_numpy
 
     python_version = cmaker.CMaker.get_python_version()