diff --git a/Makefile b/Makefile
index 652e0e6..577bf5e 100644
--- a/Makefile
+++ b/Makefile
@@ -37,6 +37,7 @@ remove_pytest_asyncio_from_sync:
 	sed -i 's/@pytest.mark.asyncio//g' tests/_sync/test_client.py
 	sed -i 's/_async/_sync/g' tests/_sync/test_client.py
 	sed -i 's/Async/Sync/g' tests/_sync/test_client.py
+	sed -i 's/Async/Sync/g' postgrest/_sync/request_builder.py
 
 sleep:
 	sleep 2
diff --git a/postgrest/_async/client.py b/postgrest/_async/client.py
index 94c9c7f..35480f5 100644
--- a/postgrest/_async/client.py
+++ b/postgrest/_async/client.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 from typing import Any, Dict, Optional, Union, cast
+from warnings import warn
 
 from deprecation import deprecated
 from httpx import Headers, QueryParams, Timeout
@@ -27,18 +28,44 @@ def __init__(
         *,
         schema: str = "public",
         headers: Dict[str, str] = DEFAULT_POSTGREST_CLIENT_HEADERS,
-        timeout: Union[int, float, Timeout] = DEFAULT_POSTGREST_CLIENT_TIMEOUT,
-        verify: bool = True,
+        timeout: Union[int, float, Timeout, None] = None,
+        verify: Optional[bool] = None,
         proxy: Optional[str] = None,
+        http_client: Optional[AsyncClient] = None,
     ) -> None:
+        if timeout is not None:
+            warn(
+                "The 'timeout' parameter is deprecated. Please configure it in the http client instead.",
+                DeprecationWarning,
+                stacklevel=2,
+            )
+        if verify is not None:
+            warn(
+                "The 'verify' parameter is deprecated. Please configure it in the http client instead.",
+                DeprecationWarning,
+                stacklevel=2,
+            )
+        if proxy is not None:
+            warn(
+                "The 'proxy' parameter is deprecated. Please configure it in the http client instead.",
+                DeprecationWarning,
+                stacklevel=2,
+            )
+
+        self.verify = bool(verify) if verify is not None else True
+        self.timeout = (
+            int(abs(timeout)) if timeout is not None else DEFAULT_POSTGREST_CLIENT_TIMEOUT
+        )
+
         BasePostgrestClient.__init__(
             self,
             base_url,
             schema=schema,
             headers=headers,
-            timeout=timeout,
-            verify=verify,
+            timeout=self.timeout,
+            verify=self.verify,
             proxy=proxy,
+            http_client=http_client,
         )
         self.session = cast(AsyncClient, self.session)
 
@@ -49,7 +76,13 @@ def create_session(
         timeout: Union[int, float, Timeout],
         verify: bool = True,
         proxy: Optional[str] = None,
+        http_client: Optional[AsyncClient] = None,
     ) -> AsyncClient:
+        if http_client is not None:
+            http_client.base_url = base_url
+            http_client.headers.update({**headers})
+            return http_client
+
         return AsyncClient(
             base_url=base_url,
             headers=headers,
diff --git a/postgrest/_sync/client.py b/postgrest/_sync/client.py
index a9dd307..7eed780 100644
--- a/postgrest/_sync/client.py
+++ b/postgrest/_sync/client.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 from typing import Any, Dict, Optional, Union, cast
+from warnings import warn
 
 from deprecation import deprecated
 from httpx import Headers, QueryParams, Timeout
@@ -27,18 +28,44 @@ def __init__(
         *,
         schema: str = "public",
         headers: Dict[str, str] = DEFAULT_POSTGREST_CLIENT_HEADERS,
-        timeout: Union[int, float, Timeout] = DEFAULT_POSTGREST_CLIENT_TIMEOUT,
-        verify: bool = True,
+        timeout: Union[int, float, Timeout, None] = None,
+        verify: Optional[bool] = None,
         proxy: Optional[str] = None,
+        http_client: Optional[SyncClient] = None,
     ) -> None:
+        if timeout is not None:
+            warn(
+                "The 'timeout' parameter is deprecated. Please configure it in the http client instead.",
+                DeprecationWarning,
+                stacklevel=2,
+            )
+        if verify is not None:
+            warn(
+                "The 'verify' parameter is deprecated. Please configure it in the http client instead.",
+                DeprecationWarning,
+                stacklevel=2,
+            )
+        if proxy is not None:
+            warn(
+                "The 'proxy' parameter is deprecated. Please configure it in the http client instead.",
+                DeprecationWarning,
+                stacklevel=2,
+            )
+
+        self.verify = bool(verify) if verify is not None else True
+        self.timeout = (
+            int(abs(timeout)) if timeout is not None else DEFAULT_POSTGREST_CLIENT_TIMEOUT
+        )
+
         BasePostgrestClient.__init__(
             self,
             base_url,
             schema=schema,
             headers=headers,
-            timeout=timeout,
-            verify=verify,
+            timeout=self.timeout,
+            verify=self.verify,
             proxy=proxy,
+            http_client=http_client,
         )
         self.session = cast(SyncClient, self.session)
 
@@ -49,7 +76,13 @@ def create_session(
         timeout: Union[int, float, Timeout],
         verify: bool = True,
         proxy: Optional[str] = None,
+        http_client: Optional[SyncClient] = None,
     ) -> SyncClient:
+        if http_client is not None:
+            http_client.base_url = base_url
+            http_client.headers.update({**headers})
+            return http_client
+
         return SyncClient(
             base_url=base_url,
             headers=headers,
diff --git a/postgrest/base_client.py b/postgrest/base_client.py
index 2c9756a..92805b3 100644
--- a/postgrest/base_client.py
+++ b/postgrest/base_client.py
@@ -20,6 +20,7 @@ def __init__(
         timeout: Union[int, float, Timeout],
         verify: bool = True,
         proxy: Optional[str] = None,
+        http_client: Union[SyncClient, AsyncClient, None] = None,
     ) -> None:
         if not is_http_url(base_url):
             ValueError("base_url must be a valid HTTP URL string")
@@ -33,8 +34,14 @@ def __init__(
         self.timeout = timeout
         self.verify = verify
         self.proxy = proxy
+        self.http_client = http_client
         self.session = self.create_session(
-            self.base_url, self.headers, self.timeout, self.verify, self.proxy
+            self.base_url,
+            self.headers,
+            self.timeout,
+            self.verify,
+            self.proxy,
+            self.http_client,
         )
 
     @abstractmethod
@@ -45,6 +52,7 @@ def create_session(
         timeout: Union[int, float, Timeout],
         verify: bool = True,
         proxy: Optional[str] = None,
+        http_client: Union[SyncClient, AsyncClient, None] = None,
     ) -> Union[SyncClient, AsyncClient]:
         raise NotImplementedError()