diff --git a/curl_cffi/requests/__init__.py b/curl_cffi/requests/__init__.py
index c37b51f..3f66a77 100644
--- a/curl_cffi/requests/__init__.py
+++ b/curl_cffi/requests/__init__.py
@@ -37,12 +37,12 @@
 from .headers import Headers, HeaderTypes
 from .impersonate import BrowserType, BrowserTypeLiteral, ExtraFingerprints, ExtraFpDict
 from .models import Request, Response
-from .session import AsyncSession, ProxySpec, Session, ThreadType
+from .session import AsyncSession, HttpMethod, ProxySpec, Session, ThreadType
 from .websockets import WebSocket, WebSocketError, WsCloseCode
 
 
 def request(
-    method: str,
+    method: HttpMethod,
     url: str,
     params: Optional[Union[Dict, List, Tuple]] = None,
     data: Optional[Union[Dict[str, str], List[Tuple], str, BytesIO, bytes]] = None,
diff --git a/curl_cffi/requests/session.py b/curl_cffi/requests/session.py
index 18f0e76..1d5333d 100644
--- a/curl_cffi/requests/session.py
+++ b/curl_cffi/requests/session.py
@@ -92,6 +92,7 @@ class BaseSessionParams(TypedDict, total=False):
     BaseSessionParams = TypedDict
 
 ThreadType = Literal["eventlet", "gevent"]
+HttpMethod = Literal["GET", "POST", "PUT", "DELETE", "OPTIONS", "HEAD", "TRACE"]
 
 
 def _is_absolute_url(url: str) -> bool:
@@ -346,7 +347,7 @@ def _set_extra_fp(self, curl, fp: ExtraFingerprints):
     def _set_curl_options(
         self,
         curl,
-        method: str,
+        method: HttpMethod,
         url: str,
         params: Optional[Union[Dict, List, Tuple]] = None,
         data: Optional[Union[Dict[str, str], List[Tuple], str, BytesIO, bytes]] = None,
@@ -888,7 +889,7 @@ def ws_connect(
 
     def request(
         self,
-        method: str,
+        method: HttpMethod,
         url: str,
         params: Optional[Union[Dict, List, Tuple]] = None,
         data: Optional[Union[Dict[str, str], List[Tuple], str, BytesIO, bytes]] = None,
@@ -1180,7 +1181,7 @@ async def ws_connect(self, url, *args, **kwargs):
 
     async def request(
         self,
-        method: str,
+        method: HttpMethod,
         url: str,
         params: Optional[Union[Dict, List, Tuple]] = None,
         data: Optional[Union[Dict[str, str], List[Tuple], str, BytesIO, bytes]] = None,