diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b6afc5d8..7fd9c57c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -39,14 +39,15 @@ jobs:
     - name: Setup miniconda
       uses: conda-incubator/setup-miniconda@v2
       with:
-        auto-update-conda: true
-        miniforge-variant: Mambaforge
+        auto-update-conda: true # false
+        miniforge-version: latest
         channels: conda-forge # defaults automatically added
         python-version: ${{ matrix.python-version }}
         activate-environment: geofabrics_CI
         environment-file: environment_CI.yml
-        use-mamba: true
         auto-activate-base: false
+        # use-only-tar-bz2: true
+        
 
     - name: Conda list
       shell: pwsh