diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 022c595..79ae3bb 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -49,7 +49,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: rte-france/or-tools
-          ref: ${{ github.event.inputs.rtefrance_ortools_branch || 'main' }}
+          ref: ${{ github.event.inputs.rtefrance_ortools_branch || 'feature/basis_python' }}
 
       - name: Checkout this repository
         uses: actions/checkout@v4