diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 4bab724..b088f3c 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -28,7 +28,7 @@ jobs:
             gcc-version: "9"
             cdt-name: cos7
 
-          - name: MacOS Intel CPU OpenCL Python 3.10
+          - name: MacOS ARM Python 3.10
             python-version: "3.10"
             os: macos-latest
             CMAKE_FLAGS: ""
@@ -49,8 +49,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
           activate-environment: build
           environment-file: devtools/conda-envs/build-${{ matrix.os }}.yml
-          auto-activate-base: false
-          channels: conda-forge
+          miniforge-variant: Mambaforge
 
       - name: "Set SDK on MacOS (if needed)"
         if: startsWith(matrix.os, 'macos')