diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index eb009a0..0755cb3 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -25,7 +25,7 @@ jobs:
 
     - name: Run mypy
       shell: bash
-      run: mypy locklib --check-untyped-defs
+      run: mypy locklib --strict
 
     - name: Run ruff
       shell: bash
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..fd1689b
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,34 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  pypi-publish:
+    name: upload release to PyPI
+    runs-on: ubuntu-latest
+    # Specifying a GitHub environment is optional, but strongly encouraged
+    environment: release
+    permissions:
+      # IMPORTANT: this permission is mandatory for trusted publishing
+      id-token: write
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v1
+        with:
+            python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        shell: bash
+        run: pip install -r requirements_dev.txt
+
+      - name: Build the project
+        shell: bash
+        run: python -m build .
+
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
diff --git a/README.md b/README.md
index 0dfb345..efbc205 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@
 [![Downloads](https://static.pepy.tech/badge/locklib/month)](https://pepy.tech/project/locklib)
 [![Downloads](https://static.pepy.tech/badge/locklib)](https://pepy.tech/project/locklib)
 [![codecov](https://codecov.io/gh/pomponchik/locklib/graph/badge.svg?token=O9G4FD8QFC)](https://codecov.io/gh/pomponchik/locklib)
+[![Hits-of-Code](https://hitsofcode.com/github/pomponchik/locklib?branch=main)](https://hitsofcode.com/github/pomponchik/locklib/view?branch=main)
 [![Test-Package](https://github.com/pomponchik/locklib/actions/workflows/tests_and_coverage.yml/badge.svg)](https://github.com/pomponchik/locklib/actions/workflows/tests_and_coverage.yml)
 [![Python versions](https://img.shields.io/pypi/pyversions/locklib.svg)](https://pypi.python.org/pypi/locklib)
 [![PyPI version](https://badge.fury.io/py/locklib.svg)](https://badge.fury.io/py/locklib)
diff --git a/locklib/__init__.py b/locklib/__init__.py
index e348469..e3d7cf0 100644
--- a/locklib/__init__.py
+++ b/locklib/__init__.py
@@ -1,2 +1,2 @@
-from locklib.locks.smart_lock.lock import SmartLock  # noqa: F401
-from locklib.errors import DeadLockError  # noqa: F401
+from locklib.locks.smart_lock.lock import SmartLock as SmartLock  # noqa: F401
+from locklib.errors import DeadLockError as DeadLockError  # noqa: F401
diff --git a/locklib/locks/smart_lock/graph.py b/locklib/locks/smart_lock/graph.py
index 13617d9..d30792b 100644
--- a/locklib/locks/smart_lock/graph.py
+++ b/locklib/locks/smart_lock/graph.py
@@ -6,7 +6,7 @@
 
 
 class LocksGraph:
-    def __init__(self):
+    def __init__(self) -> None:
         self.links: DefaultDict[int, Set[int]] = defaultdict(set)
         self.lock: Lock = Lock()
 
diff --git a/locklib/locks/smart_lock/lock.py b/locklib/locks/smart_lock/lock.py
index 2173c22..43473f2 100644
--- a/locklib/locks/smart_lock/lock.py
+++ b/locklib/locks/smart_lock/lock.py
@@ -1,10 +1,11 @@
 try:
-    from threading import Lock, get_native_id  # type: ignore
+    from threading import Lock, get_native_id  # type: ignore[attr-defined]
 except ImportError:  # pragma: no cover
     from threading import Lock, get_ident as get_native_id  # get_native_id is available only since python 3.8
 
 from collections import deque
-from typing import Deque, Dict
+from typing import Type, Deque, Dict
+from types import TracebackType
 
 from locklib.locks.smart_lock.graph import LocksGraph
 
@@ -57,8 +58,8 @@ def release(self) -> None:
 
                 lock.release()
 
-    def __enter__(self):
+    def __enter__(self) -> None:
         self.acquire()
 
-    def __exit__(self, exception_type, exception_value, traceback):
+    def __exit__(self, exception_type: Type[BaseException], exception_value: BaseException, traceback: TracebackType) -> None:
         self.release()
diff --git a/locklib/py.typed b/locklib/py.typed
new file mode 100644
index 0000000..e69de29
diff --git a/pyproject.toml b/pyproject.toml
index e77ff57..c624716 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = 'setuptools.build_meta'
 
 [project]
 name = 'locklib'
-version = '0.0.10'
+version = '0.0.11'
 authors = [
   { name='Evgeniy Blinov', email='zheni-b@yandex.ru' },
 ]
@@ -27,6 +27,9 @@ classifiers = [
   'Intended Audience :: Developers',
 ]
 
+[tool.setuptools.package-data]
+"locklib" = ["py.typed"]
+
 [project.urls]
 'Source' = 'https://github.com/pomponchik/locklib'
 'Tracker' = 'https://github.com/pomponchik/locklib/issues'