diff --git a/keystone_client/client.py b/keystone_client/client.py
index 6c66bac..115d73a 100644
--- a/keystone_client/client.py
+++ b/keystone_client/client.py
@@ -6,7 +6,7 @@
 """
 
 import abc
-from typing import Any, Dict, Optional, Union
+from typing import Any, Callable, Dict, Optional, Union
 
 import httpx
 from httpx import HTTPStatusError
@@ -57,19 +57,19 @@ def is_authenticated(self) -> dict:
         """Return metadata for the currently authenticated user."""
 
     @abc.abstractmethod
-    def _create_factory(self, endpoint: Endpoint) -> callable:
+    def _create_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data creation methods."""
 
     @abc.abstractmethod
-    def _retrieve_factory(self, endpoint: Endpoint) -> callable:
+    def _retrieve_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data retrieval methods."""
 
     @abc.abstractmethod
-    def _update_factory(self, endpoint: Endpoint) -> callable:
+    def _update_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data update methods."""
 
     @abc.abstractmethod
-    def _delete_factory(self, endpoint: Endpoint) -> callable:
+    def _delete_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data deletion methods."""
 
     @staticmethod
@@ -215,7 +215,7 @@ def is_authenticated(self, timeout: int = httpx.USE_CLIENT_DEFAULT) -> dict:
         response = self.http_get(self.IDENTITY_ENDPOINT, timeout=timeout)
         return self._handle_identity_response(response)
 
-    def _create_factory(self, endpoint: Endpoint) -> callable:
+    def _create_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data creation methods."""
 
         def create_record(data: Optional[RequestData] = None, files: Optional[RequestFiles] = None) -> dict:
@@ -235,7 +235,7 @@ def create_record(data: Optional[RequestData] = None, files: Optional[RequestFil
 
         return create_record
 
-    def _retrieve_factory(self, endpoint: Endpoint) -> callable:
+    def _retrieve_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data retrieval methods."""
 
         def retrieve_record(
@@ -269,7 +269,7 @@ def retrieve_record(
 
         return retrieve_record
 
-    def _update_factory(self, endpoint: Endpoint) -> callable:
+    def _update_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data update methods."""
 
         def update_record(
@@ -294,7 +294,7 @@ def update_record(
 
         return update_record
 
-    def _delete_factory(self, endpoint: Endpoint) -> callable:
+    def _delete_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data deletion methods."""
 
         def delete_record(pk: int, raise_not_exists: bool = False) -> None:
@@ -366,7 +366,7 @@ async def is_authenticated(self, timeout: int = httpx.USE_CLIENT_DEFAULT) -> dic
         response = await self.http_get(self.IDENTITY_ENDPOINT, timeout=timeout)
         return self._handle_identity_response(response)
 
-    def _create_factory(self, endpoint: Endpoint) -> callable:
+    def _create_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data creation methods."""
 
         async def create_record(data: Optional[RequestData] = None, files: Optional[RequestFiles] = None) -> dict:
@@ -386,7 +386,7 @@ async def create_record(data: Optional[RequestData] = None, files: Optional[Requ
 
         return create_record
 
-    def _retrieve_factory(self, endpoint: Endpoint) -> callable:
+    def _retrieve_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data retrieval methods."""
 
         async def retrieve_record(
@@ -420,7 +420,7 @@ async def retrieve_record(
 
         return retrieve_record
 
-    def _update_factory(self, endpoint: Endpoint) -> callable:
+    def _update_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data update methods."""
 
         async def update_record(
@@ -445,7 +445,7 @@ async def update_record(
 
         return update_record
 
-    def _delete_factory(self, endpoint: Endpoint) -> callable:
+    def _delete_factory(self, endpoint: Endpoint) -> Callable:
         """Factory function for data deletion methods."""
 
         async def delete_record(pk: int, raise_not_exists: bool = False) -> None:
diff --git a/keystone_client/http.py b/keystone_client/http.py
index eebc1ff..d1c9deb 100644
--- a/keystone_client/http.py
+++ b/keystone_client/http.py
@@ -19,12 +19,6 @@
 
 from .log import DefaultContextAdapter
 
-DEFAULT_TIMEOUT = 15
-DEFAULT_REDIRECTS = 10
-DEFAULT_VERIFY = True
-DEFAULT_FOLLOW = True
-DEFAULT_LIMITS = httpx.Limits(max_connections=100, max_keepalive_connections=20)
-
 HttpMethod = Literal["get", "post", "put", "patch", "delete"]
 
 logger = logging.getLogger('kclient')
@@ -41,11 +35,11 @@ def __init__(
         self,
         base_url: str,
         *,
-        verify_ssl: bool = DEFAULT_VERIFY,
-        follow_redirects: bool = DEFAULT_FOLLOW,
-        max_redirects: int = DEFAULT_REDIRECTS,
-        timeout: Optional[int] = DEFAULT_TIMEOUT,
-        limits: httpx.Limits = DEFAULT_LIMITS,
+        verify_ssl: bool = True,
+        follow_redirects: bool = False,
+        max_redirects: int = 10,
+        timeout: Optional[int] = 15,
+        limits: httpx.Limits = httpx.Limits(max_connections=100, max_keepalive_connections=20),
         transport: Optional[httpx.BaseTransport] = None,
     ) -> None:
         """Initialize a new HTTP session.
diff --git a/keystone_client/log.py b/keystone_client/log.py
index 5a91486..5a6938d 100644
--- a/keystone_client/log.py
+++ b/keystone_client/log.py
@@ -7,6 +7,7 @@
 """
 
 import logging
+from typing import Literal
 
 
 class DefaultContextAdapter(logging.LoggerAdapter):
@@ -32,7 +33,7 @@ class ContextFilter(logging.Filter):
 
     required_attr = ("cid", "baseurl", "method", "endpoint", "url")
 
-    def filter(self, record: logging.LogRecord) -> True:
+    def filter(self, record: logging.LogRecord) -> Literal[True]:
         """Ensure a log record has all required contextual attributes.
 
         Any missing contextual attributes are set to an empty string.