diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ab1ea017d..5a04becd2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,14 +42,13 @@ jobs:
     - run: pip install uv
     - name: Install dependencies
       run: |
-        uv pip install --upgrade pip
-        uv pip install .[dev,cov] ${{ matrix.pip-pre }}
+        uv pip install .[dev,cov] --system ${{ matrix.pip-pre }}
     - name: Install MPI and mpi4py
       if: matrix.test-mpi == true
       run: |
         sudo apt-get update
         sudo apt-get install -y libopenmpi-dev
-        uv pip install mpi4py
+        uv pip install mpi4py --system
     - name: Test with Pytest
       timeout-minutes: 15
       run: