diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 0d23858bed2..292f776ffd1 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -20,9 +20,10 @@ jobs:
       - name: Setup Mambaforge
         uses: conda-incubator/setup-miniconda@v3
         with:
+          installer-url: "https://github.com/conda-forge/miniforge/releases/\
+                          download/23.11.0-0/Mambaforge-23.11.0-0-MacOSX-arm64.sh"
           channels: conda-forge
           miniforge-variant: Mambaforge
-          miniforge-version: latest
           activate-environment: grass-env
           use-mamba: true
       - name: Get cache date