diff --git a/gunicorn/dirty/arbiter.py b/gunicorn/dirty/arbiter.py
index ae84fff3..52b65542 100644
--- a/gunicorn/dirty/arbiter.py
+++ b/gunicorn/dirty/arbiter.py
@@ -196,6 +196,14 @@ class DirtyArbiter:
         """Periodically check worker health and manage pool."""
         while self.alive:
             await asyncio.sleep(1.0)
+
+            # Check if parent (main arbiter) died unexpectedly
+            if os.getppid() != self.ppid:
+                self.log.warning("Parent changed, shutting down dirty arbiter")
+                self.alive = False
+                self._shutdown()
+                return
+
             await self.murder_workers()
             await self.manage_workers()
 
diff --git a/tests/test_dirty_arbiter.py b/tests/test_dirty_arbiter.py
index ca3fc784..1c69942a 100644
--- a/tests/test_dirty_arbiter.py
+++ b/tests/test_dirty_arbiter.py
@@ -894,6 +894,7 @@ class TestDirtyArbiterWorkerMonitor:
 
         arbiter = DirtyArbiter(cfg=cfg, log=log)
         arbiter.pid = os.getpid()
+        arbiter.ppid = os.getppid()  # Match actual parent for ppid check
         arbiter.alive = True
 
         monitor_calls = 0
@@ -917,6 +918,38 @@ class TestDirtyArbiterWorkerMonitor:
 
         arbiter._cleanup_sync()
 
+    @pytest.mark.asyncio
+    async def test_worker_monitor_detects_parent_death(self):
+        """Test worker monitor exits when parent dies."""
+        cfg = Config()
+        cfg.set("dirty_workers", 0)
+        log = MockLog()
+
+        arbiter = DirtyArbiter(cfg=cfg, log=log)
+        arbiter.pid = os.getpid()
+        arbiter.ppid = 99999  # Fake parent PID that doesn't match os.getppid()
+        arbiter.alive = True
+
+        shutdown_called = []
+
+        def mock_shutdown():
+            shutdown_called.append(True)
+
+        arbiter._shutdown = mock_shutdown
+
+        # Run monitor - should detect parent change and exit
+        await arbiter._worker_monitor()
+
+        # Should have detected parent death
+        assert arbiter.alive is False
+        assert len(shutdown_called) == 1
+
+        # Check log message
+        log_messages = [msg for level, msg in log.messages if level == "warning"]
+        assert any("Parent changed" in msg for msg in log_messages)
+
+        arbiter._cleanup_sync()
+
 
 class TestDirtyArbiterHandleSigchld:
     """Tests for SIGCHLD handling."""