diff --git a/tests/test_fastapi_streaming_compatibility.py b/tests/test_fastapi_streaming_compatibility.py
deleted file mode 100644
index 20a6ad5..0000000
--- a/tests/test_fastapi_streaming_compatibility.py
+++ /dev/null
@@ -1,25 +0,0 @@
-"""Test FastAPI streaming compatibility (issue #4 fix)."""
-
-import inspect
-
-from claude_code_sdk._internal.transport.subprocess_cli import SubprocessCLITransport
-
-
-def test_no_task_groups_in_receive_messages():
-    """Verify receive_messages doesn't use task groups (fixes FastAPI issue #4)."""
-    # Get the source code of receive_messages
-    source = inspect.getsource(SubprocessCLITransport.receive_messages)
-
-    # The fix: ensure no task group or task creation
-    assert "create_task_group" not in source, (
-        "receive_messages must not use create_task_group to avoid "
-        "RuntimeError with FastAPI streaming"
-    )
-    assert "asyncio.create_task" not in source, (
-        "receive_messages must not create tasks to maintain "
-        "compatibility with FastAPI's generator handling"
-    )
-
-    # Verify stderr is still being read (sequential approach)
-    assert "_stderr_stream" in source, "Should still read stderr"
-    assert "stderr_lines" in source, "Should collect stderr output"