diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f4f8f0..6e739f3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -91,6 +91,10 @@ jobs:
         run: |
           uv pip install --system ruff ty
 
+      - name: Install package
+        run: |
+          uv pip install --system -e ".[dev]"
+
       - name: Ruff check
         run: ruff check sia/ tests/
 
diff --git a/pyproject.toml b/pyproject.toml
index 2867fb0..d80d205 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -104,4 +104,4 @@ exclude = ["sia/tasks/"]
 
 [tool.ty.rules]
 not-iterable = "ignore"        # false positive on guarded attribute access
-unresolved-import = "warn"     # tests use sys.path manipulation
+unresolved-import = "ignore"   # optional providers are lazily imported, not installed in lint