diff --git a/cpp/Makefile.jinja b/cpp/Makefile.jinja
index 12b759d..9be1ca0 100644
--- a/cpp/Makefile.jinja
+++ b/cpp/Makefile.jinja
@@ -61,15 +61,15 @@ format: fix
 ################
 # Other Checks #
 ################
-.PHONY: check-manifest check-dist checks check
-
-check-manifest:  ## check python sdist manifest with check-manifest
-	check-manifest -v
+.PHONY: check-dist check-types checks check
 
 check-dist:  ## check python sdist and wheel with check-dist
 	check-dist -v
 
-checks: check-manifest
+check-types:  ## check python types with ty
+	ty check --python $$(which python)
+
+checks: check-dist
 
 # alias
 check: checks
diff --git a/cpp/pyproject.toml.jinja b/cpp/pyproject.toml.jinja
index ff71b94..0f87d8c 100644
--- a/cpp/pyproject.toml.jinja
+++ b/cpp/pyproject.toml.jinja
@@ -38,7 +38,6 @@ develop = [
     "build",
     "bump-my-version",
     "check-dist",
-    "check-manifest",
     "cibuildwheel",
     "codespell",
     "hatch-cpp",
@@ -77,17 +76,6 @@ filename = "pyproject.toml"
 search = 'version = "{current_version}"'
 replace = 'version = "{new_version}"'
 
-[tool.check-manifest]
-ignore = [
-    ".copier-answers.yaml",
-    ".clang-format",
-    "Makefile",
-    "docs/**/*",
-    "{{module}}/*.dll",
-    "{{module}}/*.dylib",
-    "{{module}}/*.so",
-]
-
 [tool.cibuildwheel]
 build = "cp310-* cp311-* cp312-* cp313-*"
 test-command = "echo 'TODO'"
diff --git a/cppjswasm/Makefile.jinja b/cppjswasm/Makefile.jinja
index 1ae7a19..32d819c 100644
--- a/cppjswasm/Makefile.jinja
+++ b/cppjswasm/Makefile.jinja
@@ -91,15 +91,15 @@ format: fix
 ################
 # Other Checks #
 ################
-.PHONY: check-manifest check-dist checks check
-
-check-manifest:  ## check python sdist manifest with check-manifest
-	check-manifest -v
+.PHONY: check-dist check-types checks check
 
 check-dist:  ## check python sdist and wheel with check-dist
 	check-dist -v
 
-checks: check-manifest
+check-types:  ## check python types with ty
+	ty check --python $$(which python)
+
+checks: check-dist
 
 # alias
 check: checks
diff --git a/cppjswasm/pyproject.toml.jinja b/cppjswasm/pyproject.toml.jinja
index e68e959..ac6c659 100644
--- a/cppjswasm/pyproject.toml.jinja
+++ b/cppjswasm/pyproject.toml.jinja
@@ -40,7 +40,6 @@ develop = [
     "build",
     "bump-my-version",
     "check-dist",
-    "check-manifest",
     "cibuildwheel",
     "codespell",
     "hatch-cpp<0.3",
@@ -85,21 +84,6 @@ filename = "js/package.json"
 search = '"version": "{current_version}"'
 replace = '"version": "{new_version}"'
 
-[tool.check-manifest]
-ignore = [
-    ".copier-answers.yaml",
-    ".clang-format",
-    "js/pnpm-lock.yaml",
-    "Makefile",
-    ".vscode/*",
-    "{{module}}/extension/**/*",
-    "{{module}}/*.dll",
-    "{{module}}/*.dylib",
-    "{{module}}/*.so",
-    "docs/**/*",
-    "js/dist/**/*",
-]
-
 [tool.cibuildwheel]
 build = "cp310-*"
 test-command = "pytest -vvv {project}/{{module}}/tests"