diff --git a/.github/workflows/gh-ci.yaml b/.github/workflows/gh-ci.yaml
index c59ff49..29f3d07 100644
--- a/.github/workflows/gh-ci.yaml
+++ b/.github/workflows/gh-ci.yaml
@@ -102,10 +102,9 @@ jobs:
       if: ${{ matrix.installer == 'micromamba' }}
       uses: mamba-org/setup-micromamba@v3
       with:
-        environment-file: false
         environment-name: mda
-        create-args: |
-          python==${{ matrix.python-version }}
+        create-args: >-
+          python=${{ matrix.python-version }}
           pip
 
     - name: Install conda Python ${{ matrix.python-version }}
@@ -164,14 +163,12 @@ jobs:
       - uses: actions/checkout@v6
 
       - name: Install mamba Python ${{ needs.gen-python-matrix.outputs.stable-python }}
-        uses: mamba-org/provision-with-micromamba@main
+        uses: mamba-org/setup-micromamba@v3
         with:
-          environment-file: ./.github/test-environment.yaml
           environment-name: mda
-          extra-specs: |
-            python==${{ needs.gen-python-matrix.outputs.stable-python }}
+          create-args: >-
+            python=${{ needs.gen-python-matrix.outputs.stable-python }}
             pip
-          channels: conda-forge
 
       - name: Install
         uses: ./
diff --git a/action.yaml b/action.yaml
index 1a2eb11..3f71ea3 100644
--- a/action.yaml
+++ b/action.yaml
@@ -80,9 +80,9 @@ runs:
           _PACKAGE_SUFFIX="==${{ inputs.version }}"
         fi
         
-        _INSTALL_LINE="MDAnalysis${_PACKAGE_SUFFIX}"
+        _INSTALL_LINE="mdanalysis${_PACKAGE_SUFFIX}"
         if [[ "${{ inputs.install-tests }}" == "true" ]] ; then
-          _INSTALL_LINE="${_INSTALL_LINE} MDAnalysisTests${_PACKAGE_SUFFIX}"
+          _INSTALL_LINE="${_INSTALL_LINE} mdanalysistests${_PACKAGE_SUFFIX}"
         fi
 
         # special case develop