diff --git a/.github/workflows/test-osx.yml b/.github/workflows/test-osx.yml
index 49df01729..3b4a8ef80 100644
--- a/.github/workflows/test-osx.yml
+++ b/.github/workflows/test-osx.yml
@@ -28,9 +28,12 @@ jobs:
       run: |
         python --version
         ${{ matrix.cxx }} --version
+        brew info boost
+        ls /opt/homebrew/Cellar/boost/1.86.0/
         faber -v
         sed -e "s/\$PYTHON/python/g" .ci/faber > ~/.faber
         faber \
+          --with-boost-include=/opt/homebrew/Cellar/boost/1.86.0/include \
           --builddir=build \
           cxx.name=${{ matrix.cxx }} \
           cxxflags=-std=${{ matrix.std }} \