diff --git a/litellm/proxy/_types.py b/litellm/proxy/_types.py
index 7728c7ee34f..d9529f7d575 100644
--- a/litellm/proxy/_types.py
+++ b/litellm/proxy/_types.py
@@ -4400,6 +4400,7 @@ class TeamMemberUpdateRequest(TeamMemberDeleteRequest):
     temp_budget_increase: float | None = Field(
         default=None,
         ge=0,
+        allow_inf_nan=False,
         description="Temporary additive budget increase for this team member, active until temp_budget_expiry",
     )
     temp_budget_expiry: datetime | None = Field(
diff --git a/tests/test_litellm/proxy/management_endpoints/test_team_endpoints.py b/tests/test_litellm/proxy/management_endpoints/test_team_endpoints.py
index b458b85602d..a7748220e44 100644
--- a/tests/test_litellm/proxy/management_endpoints/test_team_endpoints.py
+++ b/tests/test_litellm/proxy/management_endpoints/test_team_endpoints.py
@@ -15447,8 +15447,12 @@ def test_team_member_update_request_temp_budget_fields_must_be_set_together() ->
         TeamMemberUpdateRequest(team_id="team-1", user_id="user-1", temp_budget_expiry="2030-01-01T00:00:00Z")
 
 
-def test_team_member_update_request_rejects_negative_temp_budget_increase() -> None:
-    with pytest.raises(ValidationError, match="greater than or equal to 0"):
+@pytest.mark.parametrize(
+    ("increase", "message"),
+    [(-1.0, "greater than or equal to 0"), (float("inf"), "finite number")],
+)
+def test_team_member_update_request_rejects_unusable_temp_budget_increase(increase: float, message: str) -> None:
+    with pytest.raises(ValidationError, match=message):
         TeamMemberUpdateRequest(
-            team_id="team-1", user_id="user-1", temp_budget_increase=-1.0, temp_budget_expiry="2030-01-01T00:00:00Z"
+            team_id="team-1", user_id="user-1", temp_budget_increase=increase, temp_budget_expiry="2030-01-01T00:00:00Z"
         )