diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 28df28f..3c826a6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,6 +30,13 @@ jobs:
       - name: Lint with ruff
         run: ruff check src/ tests/
 
+      - name: Type check (ty — advisory)
+        if: matrix.python-version == '3.12'
+        continue-on-error: true
+        run: |
+          pip install ty==0.0.55
+          ty check src
+
       - name: Run tests
         run: pytest tests/ -v --tb=short