diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5a1dccd..805ada5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,8 +15,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-latest]
-        python-version: ['3.11']
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: ['3.9', '3.11']
     steps:
     - name: Checkout repository
       uses: actions/checkout@v4
@@ -26,9 +26,8 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
-        pip install uv
         pip install spacy --no-binary blis # do not compile blis from source
-        uv pip install --system -e .[dev]
+        pip install -e .[dev]
     - name: Run pytest 
       run: |
         cd ammico