diff --git a/docs/conf.py b/docs/conf.py
index bbb23ac..1413c85 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -34,13 +34,6 @@
 nitpicky = True
 nitpick_ignore: list[tuple[str, str]] = []
 
-nitpick_ignore = [
-    ('py:class', '_pytest.nodes.Item'),
-    ('py:class', 'Config'),
-    ('py:class', 'Path'),
-    ('py:class', 'Session'),
-]
-
 # Include Python intersphinx mapping to prevent failures
 # jaraco/skeleton#51
 extensions += ['sphinx.ext.intersphinx']
@@ -65,3 +58,13 @@
 intersphinx_mapping.update(
     pytest=('https://docs.pytest.org/en/latest/', None),
 )
+
+# local
+
+nitpick_ignore += [
+    ('py:class', 'Config'),
+    ('py:class', 'Session'),
+    # jaraco/pytest-checkdocs#25
+    ('py:class', 'PackageMetadata'),
+    ('py:class', 'Node'),
+]
diff --git a/mypy.ini b/mypy.ini
index efcb8cb..8cbce3d 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1,6 +1,6 @@
 [mypy]
 # Is the project well-typed?
-strict = False
+strict = True
 
 # Early opt-in even when strict = False
 warn_unused_ignores = True
@@ -13,3 +13,7 @@ explicit_package_bases = True
 disable_error_code =
 	# Disable due to many false positives
 	overload-overlap,
+
+# jaraco/jaraco.packaging#20
+[mypy-jaraco.packaging.*]
+ignore_missing_imports = True
diff --git a/newsfragments/25.feature.rst b/newsfragments/25.feature.rst
new file mode 100644
index 0000000..88e9b7c
--- /dev/null
+++ b/newsfragments/25.feature.rst
@@ -0,0 +1 @@
+Complete annotations and add ``py.typed`` marker -- by :user:`Avasam`
diff --git a/pyproject.toml b/pyproject.toml
index eb59798..13abe37 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -65,6 +65,8 @@ type = [
 
 	# local
 	"types-docutils", # pytest-checkdocs#13
+	"importlib_metadata; python_version < '3.12'", # Only used for annotations, not at runtime
+	"pytest>=8.3.3" # Typing fixes not necessary at runtime
 ]
 
 
@@ -73,7 +75,3 @@ pytest11 = {checkdocs = "pytest_checkdocs"}
 
 
 [tool.setuptools_scm]
-
-
-[tool.pytest-enabler.mypy]
-# Disabled due to jaraco/skeleton#143
diff --git a/pytest_checkdocs/__init__.py b/pytest_checkdocs/__init__.py
index 6f5d28c..ccf8dce 100644
--- a/pytest_checkdocs/__init__.py
+++ b/pytest_checkdocs/__init__.py
@@ -1,49 +1,72 @@
+from __future__ import annotations
+
 import contextlib
 import pathlib
 import re
+import sys
+from collections.abc import Iterator
+from typing import TYPE_CHECKING, Any
 
-import pytest
 import docutils.core
+import docutils.nodes
+import docutils.utils
+import pytest
 from jaraco.packaging import metadata
 
+if TYPE_CHECKING:
+    if sys.version_info >= (3, 12):
+        from importlib.metadata import PackageMetadata
+    else:
+        from importlib_metadata import PackageMetadata
+
+    from _pytest.nodes import Node
+    from typing_extensions import Self
 
 project_files = 'setup.py', 'setup.cfg', 'pyproject.toml'
 
 
-def pytest_collect_file(file_path: pathlib.Path, parent):
+def pytest_collect_file(file_path: pathlib.Path, parent: Node) -> CheckdocsItem | None:
     if file_path.name not in project_files:
-        return
+        return None
     return CheckdocsItem.from_parent(parent, name='project')
 
 
 class Description(str):
+    content_type: str = ""
+
     @classmethod
-    def from_md(cls, md):
+    def from_md(cls, md: PackageMetadata) -> Self:
         desc = cls(md.get('Description'))
         desc.content_type = md.get('Description-Content-Type', 'text/x-rst')
         return desc
 
 
 class CheckdocsItem(pytest.Item):
-    def runtest(self):
+    def runtest(self) -> None:
         desc = self.get_long_description()
         method_name = f"run_{re.sub('[-/]', '_', desc.content_type)}"
         getattr(self, method_name)(desc)
 
-    def run_text_markdown(self, desc):
+    def run_text_markdown(self, desc: str) -> None:
         "stubbed"
 
-    def run_text_x_rst(self, desc):
+    def run_text_x_rst(self, desc: str) -> None:
         with self.monkey_patch_system_message() as reports:
             self.rst2html(desc)
         assert not reports
 
     @contextlib.contextmanager
-    def monkey_patch_system_message(self):
-        reports = []
+    def monkey_patch_system_message(self) -> Iterator[list[str | Exception]]:
+        reports: list[str | Exception] = []
         orig = docutils.utils.Reporter.system_message
 
-        def system_message(reporter, level, message, *children, **kwargs):
+        def system_message(
+            reporter: docutils.utils.Reporter,
+            level: int,
+            message: str | Exception,
+            *children: docutils.nodes.Node,
+            **kwargs: Any,
+        ) -> docutils.nodes.system_message:
             result = orig(reporter, level, message, *children, **kwargs)
             if level >= reporter.WARNING_LEVEL:
                 # All reST failures preventing doc publishing go to reports
@@ -52,17 +75,14 @@ def system_message(reporter, level, message, *children, **kwargs):
 
             return result
 
-        docutils.utils.Reporter.system_message = system_message
+        docutils.utils.Reporter.system_message = system_message  # type: ignore[assignment] # type-stubs expands the kwargs
         yield reports
-        docutils.utils.Reporter.system_message = orig
+        docutils.utils.Reporter.system_message = orig  # type: ignore[method-assign]
 
-    def get_long_description(self):
+    def get_long_description(self) -> Description:
         return Description.from_md(metadata.load('.'))
 
     @staticmethod
-    def rst2html(value):
-        docutils_settings = {}
-        parts = docutils.core.publish_parts(
-            source=value, writer_name="html4css1", settings_overrides=docutils_settings
-        )
-        return parts['whole']
+    def rst2html(value: str) -> str:
+        parts = docutils.core.publish_parts(source=value, writer_name="html4css1")
+        return parts['whole']  # type: ignore[no-any-return] # python/typeshed#12595
diff --git a/pytest_checkdocs/py.typed b/pytest_checkdocs/py.typed
new file mode 100644
index 0000000..e69de29