diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7f181cd..4be3937 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -77,6 +77,7 @@ jobs:
           fi
 
       - name: Install
+        shell: bash
         run: |
           if [ "${{ runner.os }}" == "Windows" ]; then
             cmake --install out/build/Windows-${{ matrix.compiler }}-${{ matrix.build_type }} --prefix prefix