diff --git a/.github/workflows/build-numpy-2.yml b/.github/workflows/build-numpy-2.yml
index 706500d2a..0374905b8 100644
--- a/.github/workflows/build-numpy-2.yml
+++ b/.github/workflows/build-numpy-2.yml
@@ -23,7 +23,8 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -r requirements.txt -r requirements-dev.txt
-        pip install -U 'numpy<2.1'
+        # update bio2zarr for NumPy 2, see https://github.com/sgkit-dev/bio2zarr/issues/256
+        pip install -U 'numpy<2.1' -U git+https://github.com/sgkit-dev/bio2zarr.git
     - name: Run pre-commit
       uses: pre-commit/action@v2.0.0
     - name: Test with pytest (numba jit disabled)