diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 328b196..e588d90 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,8 +17,8 @@ jobs:
       - name: Install uv
         run: pip install uv
       - name: Install dependencies
-        run: uv sync --extra dev
+        run: uv sync --frozen --extra dev
       - name: Run ruff
-        run: uv run ruff check src
+        run: uv run --frozen ruff check src
       - name: Run mypy
-        run: uv run mypy src
\ No newline at end of file
+        run: uv run --frozen mypy src
\ No newline at end of file