diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 10d2a086..f7b4f3dc 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -67,7 +67,7 @@ jobs:
 
     - name: Install pinned dependencies - numpy ${{ matrix.versions.numpy }}, scipy ${{ matrix.versions.scipy }}
       run: |
-        python${{ matrix.versions.python }} -m pip install numpy<2.0.0 scipy<=1.13.1
+        python${{ matrix.versions.python }} -m pip install "numpy<2.0.0" "scipy<=1.13.1"
         python${{ matrix.versions.python }} setup.py build_ext -j${{ steps.cpu-cores.outputs.count }}
         python${{ matrix.versions.python }} -m pip install -e .[tests]