diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index 69e3ce7..b5e9e65 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -12,8 +12,6 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - "3.10"
-          - "3.11"
           - "3.12"
           - "3.13"
           - "3.14"
@@ -32,6 +30,6 @@ jobs:
           python-version: ${{ matrix.python-version }}
           enable-cache: true
       - name: Install corrlib
-        run: uv sync --all-extras --dev --python ${{ matrix.python-version }}
+        run: uv sync --locked --all-extras --dev --python ${{ matrix.python-version }}
       - name: Run tests
         run: uv run pytest tests