diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
old mode 100755
new mode 100644
index 5647cf48..5a4aa660
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -56,7 +56,7 @@
            fetch-depth: 0 # Fetch all history for all branches and tags.
        
        - name: setup micromamba
-         uses: mamba-org/setup-micromamba@v1
+         uses: mamba-org/setup-micromamba@v2
          with:
            environment-file: ${{ matrix.environment-file }}
            micromamba-version: 'latest'