diff --git a/.copier-answers.yaml b/.copier-answers.yaml
index 07f549f..c5f7bd1 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: cpp
diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 648483f..d0c6678 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 006a8c2..951bd06 100644
--- a/Makefile
+++ b/Makefile
@@ -30,8 +30,8 @@ lint-cpp:  ## run cpp linter
 	clang-format --dry-run -Werror -i -style=file `find ./cpp -name "*.*pp"`
 
 lint-docs:  ## lint docs with mdformat and codespell
-	python -m mdformat --check README.md docs/wiki/
-	python -m codespell_lib README.md docs/wiki/
+	python -m mdformat --check README.md $(wildcard docs/src) docs/wiki/
+	python -m codespell_lib README.md $(wildcard docs/src) docs/wiki/
 
 lint: lint-cpp lint-py  ## run project linters
 
@@ -47,8 +47,8 @@ fix-cpp:  ## fix cpp formatting
 	clang-format -i -style=file `find ./cpp -name "*.*pp"`
 
 fix-docs:  ## autoformat docs with mdformat and codespell
-	python -m mdformat README.md docs/wiki/
-	python -m codespell_lib --write README.md docs/wiki/
+	python -m mdformat README.md $(wildcard docs/src) docs/wiki/
+	python -m codespell_lib --write README.md $(wildcard docs/src) docs/wiki/
 
 fix: fix-cpp fix-py fix-docs  ## run project autoformatters
 
@@ -66,7 +66,7 @@ check-dist:  ## check python sdist and wheel with check-dist
 check-types:  ## check python types with ty
 	ty check --python $$(which python)
 
-checks: check-dist
+checks: check-dist check-types
 
 # alias
 check: checks
diff --git a/pyproject.toml b/pyproject.toml
index 13225bf..273f923 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,6 +42,7 @@ develop = [
     "hatch-cpp>=0.5.0",
     "hatchling",
     "mdformat",
+    "mdformat-frontmatter",
     "mdformat-tables>=1",
     "pybind11",
     "pytest",
@@ -101,7 +102,7 @@ test-requires = ["pytest"]
 [tool.coverage.run]
 branch = true
 omit = [
-    "python_template_cpp/tests/integration/",
+    "python_template_cpp/tests/integration/*",
 ]
 
 [tool.coverage.report]
@@ -113,13 +114,6 @@ exclude_also = [
 ignore_errors = true
 fail_under = 50
 
-[tool.hatch.build]
-artifacts = [
-    "python_template_cpp/*.dll",
-    "python_template_cpp/*.dylib",
-    "python_template_cpp/*.so",
-]
-
 [tool.hatch.build.sources]
 src = "/"
 
@@ -130,6 +124,7 @@ libraries = [
 ]
 
 [tool.hatch.build.targets.sdist]
+exclude = ["*.dll", "*.dylib", "*.so", "*.pyd"]
 packages = [
     "python_template_cpp",
     "cpp",
@@ -141,6 +136,11 @@ packages = [
 
 
 [tool.hatch.build.targets.wheel]
+artifacts = [
+    "python_template_cpp/*.dll",
+    "python_template_cpp/*.dylib",
+    "python_template_cpp/*.so",
+]
 packages = [
     "python_template_cpp",
 ]
diff --git a/python_template_cpp/extension.pyi b/python_template_cpp/extension.pyi
new file mode 100644
index 0000000..bfb558d
--- /dev/null
+++ b/python_template_cpp/extension.pyi
@@ -0,0 +1 @@
+def add(i: int, j: int) -> int: ...