diff --git a/litellm/proxy/_types.py b/litellm/proxy/_types.py
index 767e5d7b5ff..49fe39a6d17 100644
--- a/litellm/proxy/_types.py
+++ b/litellm/proxy/_types.py
@@ -1,7 +1,7 @@
 import enum
 import json
 import os
-from collections.abc import Callable, Mapping
+from collections.abc import Callable, Mapping, Sequence
 from datetime import datetime
 from types import MappingProxyType
 from typing import TYPE_CHECKING, Any, Final, Literal, NamedTuple
@@ -1278,7 +1278,7 @@ class GenerateKeyResponse(KeyRequestBase):
     updated_by: str | None = None
     created_at: datetime | None = None
     updated_at: datetime | None = None
-    warnings: list[KeyTeamLimitWarning] | None = None
+    warnings: Sequence[KeyTeamLimitWarning] | None = None
 
     @model_validator(mode="before")
     @classmethod
diff --git a/litellm/proxy/management_endpoints/key_management_endpoints.py b/litellm/proxy/management_endpoints/key_management_endpoints.py
index 7ef0d7ca736..fa08a316ef7 100644
--- a/litellm/proxy/management_endpoints/key_management_endpoints.py
+++ b/litellm/proxy/management_endpoints/key_management_endpoints.py
@@ -1529,10 +1529,10 @@ def _collect_key_team_limit_warnings(
 
 
 def _maybe_add_key_team_limit_warnings(
-    payload: dict[str, object],
+    payload: Mapping[str, object],
     data: GenerateKeyRequest | UpdateKeyRequest,
     team_table: LiteLLM_TeamTable | LiteLLM_TeamTableCachedObj | None,
-) -> dict[str, object]:
+) -> Mapping[str, object]:
     """Attach team-limit warnings to a key update payload when caps are exceeded."""
     if team_table is None:
         return payload
@@ -3239,7 +3239,7 @@ async def update_key_fn(
         if response is None:
             raise ValueError("Failed to update key got response = None")
 
-        updated_key_info: Final[dict[str, object]] = {"key": key, **response["data"]}
+        updated_key_info: Final[Mapping[str, object]] = {"key": key, **response["data"]}
         if team_limit_warnings:
             return {**updated_key_info, "warnings": list(team_limit_warnings)}
         return updated_key_info