diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index b5e9e65..646c982 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -20,6 +20,10 @@ jobs:
     env:
       UV_CACHE_DIR: /tmp/.uv-cache
     steps:
+      - name: Install git-annex
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y git-annex
       - name: Check out the repository
         uses: https://github.com/RouxAntoine/checkout@v4.1.8
         with: