diff --git a/piptools/_compat/pip_compat.py b/piptools/_compat/pip_compat.py
index a5f843ad..1d346bdf 100644
--- a/piptools/_compat/pip_compat.py
+++ b/piptools/_compat/pip_compat.py
@@ -64,7 +64,8 @@ def _from_importlib(cls, dist: _ImportLibDist) -> Distribution:
         return cls(dist._dist.name, dist._dist.version, requires, dist.direct_url)
 
 
-class FileLink(Link):
+class FileLink(Link):  # type: ignore[misc]
+    _url: str
 
     @property
     def file_path(self) -> str:
diff --git a/tests/test_pip_compat.py b/tests/test_pip_compat.py
index 583addfb..be575154 100644
--- a/tests/test_pip_compat.py
+++ b/tests/test_pip_compat.py
@@ -1,13 +1,8 @@
 from __future__ import annotations
 
-import os
-import tempfile
 from pathlib import Path, PurePosixPath
 
-import pytest
-
 from piptools._compat.pip_compat import parse_requirements
-from piptools.repositories import PyPIRepository
 
 from .constants import PACKAGES_RELATIVE_PATH