diff --git a/.github/workflows/build-cibw.yml b/.github/workflows/build-cibw.yml
index ef9603719..4e39d9d3f 100644
--- a/.github/workflows/build-cibw.yml
+++ b/.github/workflows/build-cibw.yml
@@ -31,7 +31,7 @@ jobs:
 
       - name: Run CMake
         run: |
-          cmake .. -DGTSAM_BUILD_PYTHON=1 -DGTSAM_PYTHON_VERSION=${{ matrix.python_version }}
+          cmake . -B build -DGTSAM_BUILD_PYTHON=1 -DGTSAM_PYTHON_VERSION=${{ matrix.python_version }}
 
       - name: Build and test wheels
         env: