diff --git a/.github/workflows/Pipeline.yml b/.github/workflows/Pipeline.yml
index e51fbd0..8509277 100644
--- a/.github/workflows/Pipeline.yml
+++ b/.github/workflows/Pipeline.yml
@@ -22,6 +22,7 @@ jobs:
 
       - run: |
           cat > 'ghdl_${{ matrix.suite }}.sh' <<'EOF'
+          #!/usr/bin/env sh
           cd $(dirname "$0")/std_pkgs_08/simulation
           grun ${{ matrix.suite }}
           EOF