diff --git a/tests/test_litellm/integrations/test_langfuse_otel.py b/tests/test_litellm/integrations/test_langfuse_otel.py
index 9fed4ef0d69..6a55a1b3106 100644
--- a/tests/test_litellm/integrations/test_langfuse_otel.py
+++ b/tests/test_litellm/integrations/test_langfuse_otel.py
@@ -1,5 +1,6 @@
 import json
 import os
+from typing import Final
 from unittest.mock import MagicMock, patch
 
 import pytest
@@ -483,9 +484,11 @@ class TestLangfuseOtelIntegration:
             assert isinstance(config, OpenTelemetryConfig)
             # Endpoint assertion removed as side effect is gone
 
-    def test_request_metadata_is_emitted_under_langfuse_observation_and_trace_metadata_keys(self, monkeypatch):
+    def test_request_metadata_is_emitted_under_langfuse_observation_and_trace_metadata_keys(
+        self, monkeypatch: pytest.MonkeyPatch
+    ) -> None:
         monkeypatch.setattr(litellm, "redact_user_api_key_info", False)
-        request_metadata = {
+        request_metadata: Final = {
             "user_api_key_hash": "hash123",
             "user_api_key_alias": "prod-key",
             "user_api_key_user_id": "user-1",
@@ -496,22 +499,18 @@ class TestLangfuseOtelIntegration:
             "requester_ip_address": "10.0.0.1",
             "requester_metadata": {"ticket": "LIT-8283"},
         }
-        kwargs = {
+        kwargs: Final = {
             "litellm_params": {"metadata": {}},
             "standard_logging_object": {"metadata": request_metadata},
         }
 
-        with patch(
-            "litellm.integrations.arize._utils.safe_set_attribute"
-        ) as mock_safe_set_attribute:
+        with patch("litellm.integrations.arize._utils.safe_set_attribute") as mock_safe_set_attribute:
             LangfuseOtelLogger._set_langfuse_specific_attributes(MagicMock(), kwargs, None)
 
-            actual = {call.args[1]: call.args[2] for call in mock_safe_set_attribute.call_args_list}
+            actual: Final = {call.args[1]: call.args[2] for call in mock_safe_set_attribute.call_args_list}
 
             assert json.loads(actual["langfuse.observation.metadata"]) == {**request_metadata}
-            assert {
-                key: value for key, value in actual.items() if key.startswith("langfuse.trace.metadata.")
-            } == {
+            assert {key: value for key, value in actual.items() if key.startswith("langfuse.trace.metadata.")} == {
                 "langfuse.trace.metadata.user_api_key_alias": "prod-key",
                 "langfuse.trace.metadata.user_api_key_user_id": "user-1",
                 "langfuse.trace.metadata.user_api_key_end_user_id": "end-user-1",
@@ -519,9 +518,9 @@ class TestLangfuseOtelIntegration:
                 "langfuse.trace.metadata.user_api_key_team_alias": "team-a",
             }
 
-    def test_request_metadata_redaction_matches_vanilla_langfuse(self, monkeypatch):
+    def test_request_metadata_redaction_matches_vanilla_langfuse(self, monkeypatch: pytest.MonkeyPatch) -> None:
         monkeypatch.setattr(litellm, "redact_user_api_key_info", True)
-        request_metadata = {
+        request_metadata: Final = {
             "user_api_key_hash": "hash123",
             "user_api_key_alias": "prod-key",
             "user_api_key_user_id": "user-1",
@@ -532,17 +531,15 @@ class TestLangfuseOtelIntegration:
             "requester_ip_address": "10.0.0.1",
             "requester_metadata": {"ticket": "LIT-8283"},
         }
-        kwargs = {
+        kwargs: Final = {
             "litellm_params": {"metadata": {}},
             "standard_logging_object": {"metadata": request_metadata},
         }
 
-        with patch(
-            "litellm.integrations.arize._utils.safe_set_attribute"
-        ) as mock_safe_set_attribute:
+        with patch("litellm.integrations.arize._utils.safe_set_attribute") as mock_safe_set_attribute:
             LangfuseOtelLogger._set_langfuse_specific_attributes(MagicMock(), kwargs, None)
 
-            actual = {call.args[1]: call.args[2] for call in mock_safe_set_attribute.call_args_list}
+            actual: Final = {call.args[1]: call.args[2] for call in mock_safe_set_attribute.call_args_list}
 
             assert json.loads(actual["langfuse.observation.metadata"]) == {
                 "spend_logs_metadata": {"env": "prod"},
@@ -551,20 +548,18 @@ class TestLangfuseOtelIntegration:
             }
             assert not [key for key in actual if key.startswith("langfuse.trace.metadata.")]
 
-    def test_request_metadata_keys_are_absent_without_standard_logging_object(self, monkeypatch):
+    def test_request_metadata_keys_are_absent_without_standard_logging_object(
+        self, monkeypatch: pytest.MonkeyPatch
+    ) -> None:
         monkeypatch.setattr(litellm, "redact_user_api_key_info", False)
-        kwargs = {"litellm_params": {"metadata": {"trace_metadata": {"k": "v"}}}}
+        kwargs: Final = {"litellm_params": {"metadata": {"trace_metadata": {"k": "v"}}}}
 
-        with patch(
-            "litellm.integrations.arize._utils.safe_set_attribute"
-        ) as mock_safe_set_attribute:
+        with patch("litellm.integrations.arize._utils.safe_set_attribute") as mock_safe_set_attribute:
             LangfuseOtelLogger._set_langfuse_specific_attributes(MagicMock(), kwargs, None)
 
-            actual = {call.args[1]: call.args[2] for call in mock_safe_set_attribute.call_args_list}
+            actual: Final = {call.args[1]: call.args[2] for call in mock_safe_set_attribute.call_args_list}
 
-            assert [key for key in actual if key.startswith("langfuse.trace.metadata")] == [
-                "langfuse.trace.metadata"
-            ]
+            assert [key for key in actual if key.startswith("langfuse.trace.metadata")] == ["langfuse.trace.metadata"]
             assert "langfuse.observation.metadata" not in actual