diff --git a/.github/workflows/osrm-backend.yml b/.github/workflows/osrm-backend.yml
index 493a45ff2..98761cc70 100644
--- a/.github/workflows/osrm-backend.yml
+++ b/.github/workflows/osrm-backend.yml
@@ -32,6 +32,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Install Ninja
+      shell: bash
       run: |
         choco install ninja -y
         refreshenv