diff --git a/diffsync/__init__.py b/diffsync/__init__.py
index de18b2d..db404ea 100644
--- a/diffsync/__init__.py
+++ b/diffsync/__init__.py
@@ -29,7 +29,6 @@
     Set,
 )
 from typing_extensions import deprecated
-import warnings
 
 from pydantic import ConfigDict, BaseModel, PrivateAttr
 import structlog  # type: ignore
diff --git a/tests/unit/test_deprecation.py b/tests/unit/test_deprecation.py
index 86726c1..c85345b 100644
--- a/tests/unit/test_deprecation.py
+++ b/tests/unit/test_deprecation.py
@@ -1,10 +1,30 @@
+"""Unit tests for the DiffSync deprecation warning.
 
-from diffsync import DiffSync
+Copyright (c) 2020-2024 Network To Code, LLC <info@networktocode.com>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+"""
 
 import pytest
 
+from diffsync import DiffSync
+
+
 def test_diffsync_deprecation_warning():
+    """Test that `DiffSync` causes a deprecation warning."""
     with pytest.deprecated_call():
-        class TestAdapter(DiffSync):
+
+        class TestAdapter(DiffSync):  # pylint:disable=missing-class-docstring
             pass
+
         TestAdapter()