diff --git a/mypy.ini b/mypy.ini
index 5e2e483..6e76e80 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1,4 +1,8 @@
 [mypy]
+strict = True
+warn_return_any = False
+show_error_context = True
+pretty = True
 
 [mypy-docs.source.*]
 ignore_errors = True
diff --git a/pyvulnerabilitylookup/__init__.py b/pyvulnerabilitylookup/__init__.py
index 8d3a243..df886a0 100644
--- a/pyvulnerabilitylookup/__init__.py
+++ b/pyvulnerabilitylookup/__init__.py
@@ -1,11 +1,17 @@
+from __future__ import annotations
+
 import argparse
 import json
 import sys
 
+from typing import Any
+
 from .api import PyVulnerabilityLookup
 
+__all__ = ['PyVulnerabilityLookup']
 
-def main():
+
+def main() -> None:
     parser = argparse.ArgumentParser(description='Query a thing.')
     parser.add_argument('--url', type=str, required=True, help='URL of the instance.')
     group = parser.add_mutually_exclusive_group(required=True)
@@ -15,6 +21,8 @@ def main():
 
     client = PyVulnerabilityLookup(args.url)
 
+    response: bool | dict[str, Any]
+
     if not client.is_up:
         print(f'Unable to reach {client.root_url}. Is the server up?')
         sys.exit(1)
diff --git a/pyvulnerabilitylookup/api.py b/pyvulnerabilitylookup/api.py
index 1bc6003..2d447f6 100644
--- a/pyvulnerabilitylookup/api.py
+++ b/pyvulnerabilitylookup/api.py
@@ -1,9 +1,10 @@
 #!/usr/bin/env python3
-# -*- coding: utf-8 -*-
+
+from __future__ import annotations
 
 from importlib.metadata import version
 from pathlib import Path
-from typing import Dict, Optional, Any
+from typing import Any
 from urllib.parse import urljoin, urlparse
 
 import requests
@@ -11,8 +12,8 @@ import requests
 
 class PyVulnerabilityLookup():
 
-    def __init__(self, root_url: str, useragent: Optional[str]=None,
-                 *, proxies: Optional[Dict[str, str]]=None):
+    def __init__(self, root_url: str, useragent: str | None=None,
+                 *, proxies: dict[str, str] | None=None) -> None:
         '''Query a specific instance.
 
         :param root_url: URL of the instance to query.
@@ -39,11 +40,11 @@ class PyVulnerabilityLookup():
             return False
         return r.status_code == 200
 
-    def redis_up(self) -> Dict:
+    def redis_up(self) -> bool:
         '''Check if redis is up and running'''
         r = self.session.get(urljoin(self.root_url, 'redis_up'))
         return r.json()
 
-    def get_vulnerability(self, vulnerability_id: str) -> Dict[str, Any]:
+    def get_vulnerability(self, vulnerability_id: str) -> dict[str, Any]:
         r = self.session.get(urljoin(self.root_url, str(Path('vulnerability', vulnerability_id))))
         return r.json()
diff --git a/tests/test_web.py b/tests/test_web.py
index 1f762fb..6062672 100644
--- a/tests/test_web.py
+++ b/tests/test_web.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-# -*- coding: utf-8 -*-
 
 import unittest
 
@@ -8,13 +7,13 @@ from pyvulnerabilitylookup import PyVulnerabilityLookup
 
 class TestBasic(unittest.TestCase):
 
-    def setUp(self):
+    def setUp(self) -> None:
         self.client = PyVulnerabilityLookup(root_url="http://127.0.0.1:10001")
 
-    def test_up(self):
+    def test_up(self) -> None:
         self.assertTrue(self.client.is_up)
         self.assertTrue(self.client.redis_up())
 
-    def test_get_vulnerability(self):
+    def test_get_vulnerability(self) -> None:
         vuln = self.client.get_vulnerability('CVE-2023-23059')
         self.assertEqual(vuln['cve']['id'], 'CVE-2023-23059')