diff --git a/.github/conda/conda_build_config.yaml b/.github/conda/conda_build_config.yaml
index 33a12a72..882e9846 100644
--- a/.github/conda/conda_build_config.yaml
+++ b/.github/conda/conda_build_config.yaml
@@ -7,4 +7,5 @@ python:
 
 # from https://github.com/phracker/MacOSX-SDKs
 CONDA_BUILD_SYSROOT:
-- /opt/MacOSX10.9.sdk # [osx]
+- /opt/MacOSX11.3.sdk # [osx and arm64]
+- /opt/MacOSX10.9.sdk # [osx and not arm64]
diff --git a/.github/workflows/conda-dev.yml b/.github/workflows/conda-dev.yml
index 9444bda7..67df75fd 100644
--- a/.github/workflows/conda-dev.yml
+++ b/.github/workflows/conda-dev.yml
@@ -18,7 +18,7 @@ jobs:
         os:
         - ubuntu-latest
         - macos-latest
-        - windows-latest
+        - windows-2019
         python-version: ['3.8']
 
     steps:
@@ -44,8 +44,10 @@ jobs:
       if: ${{ matrix.os == 'macos-latest' }}
       shell: pwsh
       run: |
-        Invoke-WebRequest -Uri 'https://github.com/phracker/MacOSX-SDKs/releases/download/10.15/MacOSX10.9.sdk.tar.xz' -OutFile 'MacOSX10.9.sdk.tar.xz'
+        Invoke-WebRequest -Uri 'https://github.com/phracker/MacOSX-SDKs/releases/download/11.3/MacOSX10.9.sdk.tar.xz' -OutFile 'MacOSX10.9.sdk.tar.xz'
+        Invoke-WebRequest -Uri 'https://github.com/phracker/MacOSX-SDKs/releases/download/11.3/MacOSX11.3.sdk.tar.xz' -OutFile 'MacOSX11.3.sdk.tar.xz'
         sudo tar xf MacOSX10.9.sdk.tar.xz -C /opt
+        sudo tar xf MacOSX11.3.sdk.tar.xz -C /opt
 
     - name: print info
       shell: pwsh
@@ -68,3 +70,21 @@ jobs:
         python .github/conda.py --release
       env:
         ANACONDA_API_TOKEN: ${{ secrets.ANACONDA_TOKEN }}
+
+    - name: publish conda package (wip)
+      if: ${{ github.event.inputs.wip == 'true' && matrix.os == 'macos-latest' }}
+      shell: pwsh
+      run: |
+        python .github/conda.py
+      env:
+        CONDA_SUBDIR: osx-64
+        ANACONDA_API_TOKEN: ${{ secrets.ANACONDA_TOKEN }}
+
+    - name: publish conda package (release)
+      if: ${{ github.event.inputs.wip == 'false' && matrix.os == 'macos-latest' }}
+      shell: pwsh
+      run: |
+        python .github/conda.py --release
+      env:
+        CONDA_SUBDIR: osx-64
+        ANACONDA_API_TOKEN: ${{ secrets.ANACONDA_TOKEN }}