diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d877135..648f32b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -41,7 +41,7 @@ jobs:
     - name: Install QuTiP from GitHub
       if: ${{ startsWith( matrix.qutip-version, '@') }}
       run: |
-        python -m pip install numpy scipy cython <3.0.0
+        python -m pip install numpy scipy 'cython<3.0.0'
         python -m pip install 'git+https://github.com/qutip/qutip.git${{ matrix.qutip-version }}'
 
     - name: Install qutip-qtrl