diff --git a/.copier-answers.yaml b/.copier-answers.yaml
index a840734..e940934 100644
--- a/.copier-answers.yaml
+++ b/.copier-answers.yaml
@@ -1,5 +1,5 @@
 # Changes here will be overwritten by Copier
-_commit: b74d698
+_commit: 37f89c1
 _src_path: https://github.com/python-project-templates/base.git
 add_docs: true
 add_extension: python
diff --git a/pyproject.toml b/pyproject.toml
index beaf9a7..d7dd08b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,10 +1,14 @@
 [build-system]
-requires = ["hatchling"]
+requires = [
+    "hatchling",
+]
 build-backend="hatchling.build"
 
 [project]
 name = "hatch-multi"
-authors = [{name = "the hatch-multi authors", email = "t.paine154@gmail.com"}]
+authors = [
+    {name = "the hatch-multi authors", email = "t.paine154@gmail.com"},
+]
 description = "Create multiple discrete packages from optional-dependencies (extras)"
 readme = "README.md"
 license = { text = "Apache-2.0" }
@@ -46,6 +50,7 @@ develop = [
     "pytest-cov",
     "ruff>=0.9,<0.15",
     "twine",
+    "ty",
     "uv",
     "wheel",
 ]
@@ -99,31 +104,51 @@ artifacts = []
 src = "/"
 
 [tool.hatch.build.targets.sdist]
-packages = ["hatch_multi"]
+packages = [
+    "hatch_multi",
+]
 
 [tool.hatch.build.targets.wheel]
-packages = ["hatch_multi"]
+packages = [
+    "hatch_multi",
+]
 
 [tool.hatch.build.targets.wheel.shared-data]
 
 [tool.pytest.ini_options]
-addopts = ["-vvv", "--junitxml=junit.xml"]
+addopts = [
+    "-vvv",
+    "--junitxml=junit.xml",
+]
 testpaths = "hatch_multi/tests"
 
 [tool.ruff]
 line-length = 150
 
 [tool.ruff.lint]
-extend-select = ["I"]
+extend-select = [
+    "I",
+]
 
 [tool.ruff.lint.isort]
 combine-as-imports = true
 default-section = "third-party"
-known-first-party = ["hatch_multi"]
-section-order = ["future", "standard-library", "third-party", "first-party", "local-folder"]
+known-first-party = [
+    "hatch_multi",
+]
+section-order = [
+    "future",
+    "standard-library",
+    "third-party",
+    "first-party",
+    "local-folder",
+]
 
 [tool.ruff.lint.per-file-ignores]
-"__init__.py" = ["F401", "F403"]
+"__init__.py" = [
+    "F401",
+    "F403",
+]
 
 [tool.yardang]
 title = "hatch multi"