diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index c425ca0..3e44ab5 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -17,5 +17,14 @@ repos:
     rev: v1.13.0
     hooks:
       - id: mypy
-        additional_dependencies: [types-requests==2.27.11]
+        additional_dependencies:
+          [
+            types-requests>=2.21.0,
+            websockets>=13,
+            aiohttp>=3.8.1,
+            async_timeout>=4.0.3,
+            cryptography>=35.0.0,
+            py3rijndael>=0.3.3,
+          ]
         exclude: setup|docs/|example/|tests/
+        args: [--strict]
diff --git a/pyproject.toml b/pyproject.toml
index 80ed746..1d96588 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -60,7 +60,10 @@ exclude = [
 ]
 
 [[tool.mypy.overrides]]
-module = 'websocket.*'
+module = [
+    'py3rijndael.*',
+    'websocket.*',
+]
 ignore_missing_imports = true
 
 [[tool.mypy.overrides]]
diff --git a/samsungtvws/encrypted/session.py b/samsungtvws/encrypted/session.py
index 098bcd3..0cb03a2 100644
--- a/samsungtvws/encrypted/session.py
+++ b/samsungtvws/encrypted/session.py
@@ -36,7 +36,7 @@ def _decrypt(self, enc: bytes) -> str:
 
     def _encrypt(self, raw: str) -> bytes:
         encryptor = self._cipher.encryptor()
-        return (  # type:ignore[no-any-return]
+        return (
             encryptor.update(bytes(Padding.pad(raw), encoding="utf8"))
             + encryptor.finalize()
         )