diff --git a/tests/test_dirgraph.py b/tests/test_dirgraph.py
index 2871f91b..57a3d4b0 100644
--- a/tests/test_dirgraph.py
+++ b/tests/test_dirgraph.py
@@ -54,8 +54,9 @@ def test_directed_graph_generation(setup_files):
 
     generated_dot_file_path = tmp_path / (os.path.splitext(os.path.basename(input_file_path))[0] + "_directed_graph.dot")
 
+    filecmp.clear_cache()
     assert filecmp.cmp(generated_dot_file_path, expected_dot_file_path), \
         f"The generated dot file '{generated_dot_file_path}' does not match the expected dot file '{expected_dot_file_path}'."
 
 if __name__ == "__main__":
-    pytest.main()
\ No newline at end of file
+    pytest.main()