diff --git a/hahomematic/client/json_rpc.py b/hahomematic/client/json_rpc.py
index fdbcb431..3234d585 100644
--- a/hahomematic/client/json_rpc.py
+++ b/hahomematic/client/json_rpc.py
@@ -8,9 +8,16 @@
 import logging
 import os
 from pathlib import Path
+from ssl import SSLContext
 from typing import Any, Final
 
-from aiohttp import ClientConnectorCertificateError, ClientError, ClientResponse, ClientSession
+from aiohttp import (
+    ClientConnectorCertificateError,
+    ClientError,
+    ClientResponse,
+    ClientSession,
+    ClientTimeout,
+)
 import orjson
 
 from hahomematic import central as hmcu, config
@@ -108,7 +115,7 @@ def __init__(
         self._password: Final = password
         self._looper = Looper()
         self._tls: Final = tls
-        self._tls_context: Final = get_tls_context(verify_tls) if tls else None
+        self._tls_context: Final[SSLContext | bool] = get_tls_context(verify_tls) if tls else False
         self._url: Final = f"{device_url}{PATH_JSON_RPC}"
         self._script_cache: Final[dict[str, str]] = {}
         self._last_session_id_refresh: datetime | None = None
@@ -312,7 +319,7 @@ async def _do_post(
                     self._url,
                     data=payload,
                     headers=headers,
-                    timeout=config.TIMEOUT,
+                    timeout=ClientTimeout(total=config.TIMEOUT),
                     ssl=self._tls_context,
                 )
             ) is None:
diff --git a/requirements_test.txt b/requirements_test.txt
index 0f594620..deb2a164 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -6,7 +6,8 @@ freezegun==1.5.1
 mypy-dev==1.12.0a3
 pip==24.2
 pre-commit==3.8.0
-pydantic==2.8.2
+pur==7.3.2
+pydantic==2.9.0
 pydevccu==0.1.8
 pylint-per-file-ignores==1.3.2
 pylint-strict-informational==0.1
@@ -19,4 +20,4 @@ pytest-socket==0.7.0
 pytest-timeout==2.3.1
 pytest==8.3.2
 types-python-slugify==8.0.2.20240310
-uv==0.4.5
+uv==0.4.7
diff --git a/requirements_test_pre_commit.txt b/requirements_test_pre_commit.txt
index 73893044..12bf4755 100644
--- a/requirements_test_pre_commit.txt
+++ b/requirements_test_pre_commit.txt
@@ -1,4 +1,4 @@
 bandit==1.7.9
 codespell==2.3.0
-ruff==0.6.3
+ruff==0.6.4
 yamllint==1.35.1