diff --git a/.circleci/config.yml b/.circleci/config.yml
index 3d174a8..b5f2620 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -6,7 +6,7 @@ executors:
       - image: cimg/python:3.12
   python-vm:
     machine:
-      - image: ubuntu-2204:current
+      image: ubuntu-2204:current
 
 workflows:
   ci:
@@ -59,7 +59,7 @@ jobs:
           name: Setup ArangoDB
           command: |
             chmod +x starter.sh
-            ./starter.sh ${{ matrix.arangodb_config }} ${{ matrix.arangodb_license }} ${{ matrix.arangodb_version }}
+            ./starter.sh << parameters.arangodb_config >> << parameters.arangodb_license >> << parameters.arangodb_version >>
       - restore_cache:
           key: pip-and-local-cache
       - run:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ae48c5f..4814fbe 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,7 +1,7 @@
 repos:
   -   repo: https://github.com/pre-commit/pre-commit-hooks
       rev: v4.4.0
-    # See https://pre-commit.com/hooks.html
+      # See https://pre-commit.com/hooks.html
       hooks:
         -   id: check-case-conflict
         -   id: check-executables-have-shebangs
diff --git a/arangoasync/http.py b/arangoasync/http.py
index 35db1ad..b6ebfc0 100644
--- a/arangoasync/http.py
+++ b/arangoasync/http.py
@@ -156,7 +156,7 @@ async def send_request(
                 url=str(response.real_url),
                 headers=response.headers,
                 status_code=response.status,
-                status_text=response.reason,
+                status_text=str(response.reason),
                 raw_body=raw_body,
             )
 
diff --git a/arangoasync/request.py b/arangoasync/request.py
index bd68e4a..5971f92 100644
--- a/arangoasync/request.py
+++ b/arangoasync/request.py
@@ -6,7 +6,7 @@
 from enum import Enum, auto
 from typing import Optional
 
-from arangoasync.typings import Headers, Params
+from arangoasync.typings import Params, RequestHeaders
 from arangoasync.version import __version__
 
 
@@ -52,18 +52,18 @@ def __init__(
         self,
         method: Method,
         endpoint: str,
-        headers: Optional[Headers] = None,
+        headers: Optional[RequestHeaders] = None,
         params: Optional[Params] = None,
         data: Optional[str] = None,
     ) -> None:
         self.method: Method = method
         self.endpoint: str = endpoint
-        self.headers: Headers = self._normalize_headers(headers)
+        self.headers: RequestHeaders = self._normalize_headers(headers)
         self.params: Params = self._normalize_params(params)
         self.data: Optional[str] = data
 
     @staticmethod
-    def _normalize_headers(headers: Optional[Headers]) -> Headers:
+    def _normalize_headers(headers: Optional[RequestHeaders]) -> RequestHeaders:
         """Normalize request headers.
 
         Parameters:
@@ -73,7 +73,7 @@ def _normalize_headers(headers: Optional[Headers]) -> Headers:
             dict: Normalized request headers.
         """
         driver_header = f"arangoasync/{__version__}"
-        normalized_headers: Headers = {
+        normalized_headers: RequestHeaders = {
             "charset": "utf-8",
             "content-type": "application/json",
             "x-arango-driver": driver_header,
diff --git a/arangoasync/response.py b/arangoasync/response.py
index a60d753..63b10fb 100644
--- a/arangoasync/response.py
+++ b/arangoasync/response.py
@@ -5,7 +5,7 @@
 from typing import Optional
 
 from arangoasync.request import Method
-from arangoasync.typings import Headers
+from arangoasync.typings import ResponseHeaders
 
 
 class Response:
@@ -14,7 +14,7 @@ class Response:
     Parameters:
         method (Method): HTTP method.
         url (str): API URL.
-        headers (dict | None): Response headers.
+        headers (dict): Response headers.
         status_code (int): Response status code.
         status_text (str): Response status text.
         raw_body (bytes): Raw response body.
@@ -22,7 +22,7 @@ class Response:
     Attributes:
         method (Method): HTTP method.
         url (str): API URL.
-        headers (dict | None): Response headers.
+        headers (dict): Response headers.
         status_code (int): Response status code.
         status_text (str): Response status text.
         raw_body (bytes): Raw response body.
@@ -47,14 +47,14 @@ def __init__(
         self,
         method: Method,
         url: str,
-        headers: Headers,
+        headers: ResponseHeaders,
         status_code: int,
         status_text: str,
         raw_body: bytes,
     ) -> None:
         self.method: Method = method
         self.url: str = url
-        self.headers: Headers = headers
+        self.headers: ResponseHeaders = headers
         self.status_code: int = status_code
         self.status_text: str = status_text
         self.raw_body: bytes = raw_body
diff --git a/arangoasync/typings.py b/arangoasync/typings.py
index a96bbac..b3622f9 100644
--- a/arangoasync/typings.py
+++ b/arangoasync/typings.py
@@ -1,14 +1,18 @@
 __all__ = [
-    "Headers",
+    "RequestHeaders",
+    "ResponseHeaders",
     "Params",
 ]
 
 from typing import MutableMapping
 
-from multidict import MultiDict
+from multidict import CIMultiDictProxy, MultiDict
 
-Headers = MutableMapping[str, str] | MultiDict[str]
-Headers.__doc__ = """Type definition for HTTP headers"""
+RequestHeaders = MutableMapping[str, str] | MultiDict[str]
+RequestHeaders.__doc__ = """Type definition for request HTTP headers"""
+
+ResponseHeaders = MutableMapping[str, str] | MultiDict[str] | CIMultiDictProxy[str]
+ResponseHeaders.__doc__ = """Type definition for response HTTP headers"""
 
 Params = MutableMapping[str, bool | int | str]
 Params.__doc__ = """Type definition for URL (query) parameters"""
diff --git a/tests/test_http.py b/tests/test_http.py
index a214bd1..a1047dc 100644
--- a/tests/test_http.py
+++ b/tests/test_http.py
@@ -12,7 +12,6 @@ async def test_AioHTTPClient_simple_request(url):
     request = Request(
         method=Method.GET,
         endpoint="/_api/version",
-        deserialize=False,
     )
     response = await client.send_request(session, request)
     assert response.method == Method.GET
@@ -28,7 +27,6 @@ async def test_AioHTTPClient_auth_pass(url, root, password):
     request = Request(
         method=Method.GET,
         endpoint="/_api/version",
-        deserialize=False,
     )
     response = await client.send_request(session, request)
     assert response.method == Method.GET