diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 5e3b6dd..ef978e9 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -4,21 +4,15 @@ on: [push]
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
-
+        environment: [py311, py312]
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+      - uses: prefix-dev/setup-pixi@v0.5.1
         with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements.txt
+          pixi-version: v0.13.0
+          environments: ${{ matrix.environment }}
       - name: Run tests
-        run: pytest -vsl --cov=ragger_duck --cov-report term-missing ragger_duck
+        run: pixi run test
diff --git a/pixi.toml b/pixi.toml
index d35efc4..e5d94c6 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -60,6 +60,18 @@ sentence-transformers = "2.3.1"
 start-ragger-duck = { cmd = "DEVICE=cpu uvicorn main:app --reload --host 0.0.0.0 --port 8123", cwd = "app" }
 train-retrievers = { cmd = "DEVICE=cpu python train_retrievers.py", cwd = "scripts" }
 
+[feature.py309.dependencies]
+python = "3.9.*"
+
+[feature.py310.dependencies]
+python = "3.10.*"
+
+[feature.py311.dependencies]
+python = "3.11.*"
+
 [environments]
 cpu = ["cpu"]
 mps = ["mps"]
+py309 = ["py309", "cpu"]
+py310 = ["py310", "cpu"]
+py311 = ["py311", "cpu"]