diff --git a/.copier-answers.yaml b/.copier-answers.yaml
index 9f9b39b..8d280bc 100644
--- a/.copier-answers.yaml
+++ b/.copier-answers.yaml
@@ -1,5 +1,5 @@
 # Changes here will be overwritten by Copier
-_commit: ebb6e1c
+_commit: '4372075'
 _src_path: https://github.com/python-project-templates/base.git
 add_docs: true
 add_extension: cython
diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 7e15199..cbb2401 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -15,7 +15,7 @@ on:
   workflow_dispatch:
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
 permissions:
diff --git a/Makefile b/Makefile
index a7c24db..c11080f 100644
--- a/Makefile
+++ b/Makefile
@@ -18,16 +18,16 @@ lint-py:  ## lint Python with ruff
 	python -m ruff format --check python_template_cython
 
 lint-docs:  ## lint documentation
-	python -m mdformat --check README.md docs/development.md
-	python -m codespell_lib README.md docs/development.md
+	python -m mdformat --check README.md docs/development.md $(wildcard docs/src)
+	python -m codespell_lib README.md docs/development.md $(wildcard docs/src)
 
 fix-py:  ## autoformat Python code
 	python -m ruff check --fix python_template_cython
 	python -m ruff format python_template_cython
 
 fix-docs:  ## autoformat documentation
-	python -m mdformat README.md docs/development.md
-	python -m codespell_lib --write README.md docs/development.md
+	python -m mdformat README.md docs/development.md $(wildcard docs/src)
+	python -m codespell_lib --write README.md docs/development.md $(wildcard docs/src)
 
 lint: lint-py lint-docs  ## run all linters
 lints: lint
@@ -40,7 +40,7 @@ check-dist:  ## check python sdist and wheel with check-dist
 check-types:  ## check Python types (advisory)
 	ty check python_template_cython
 
-checks: check-dist  ## run distribution checks
+checks: check-dist check-types  ## run distribution checks
 check: checks
 
 test:  ## run Python tests
diff --git a/pyproject.toml b/pyproject.toml
index 7ec87c9..0afeb21 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,6 +43,7 @@ develop = [
     "hatch-cython",
     "hatchling",
     "mdformat",
+    "mdformat-frontmatter",
     "mdformat-tables>=1",
     "pytest",
     "pytest-cov",
@@ -79,7 +80,7 @@ replace = 'version = "{new_version}"'
 [tool.coverage.run]
 branch = true
 omit = [
-    "python_template_cython/tests/integration/",
+    "python_template_cython/tests/integration/*",
     "python_template_cython/_compiled.py",
 ]
 
diff --git a/python_template_cython/_native.pyi b/python_template_cython/_native.pyi
new file mode 100644
index 0000000..44df0f3
--- /dev/null
+++ b/python_template_cython/_native.pyi
@@ -0,0 +1 @@
+def add(left: int, right: int) -> int: ...