diff --git a/tests/test_sse.py b/tests/test_sse.py
index 1530397..34413b1 100644
--- a/tests/test_sse.py
+++ b/tests/test_sse.py
@@ -44,28 +44,31 @@ class TestSSEEvent:
 class TestSSEBroker:
     def test_subscribe_returns_queue(self):
         broker = SSEBroker()
-        cid, queue = broker.subscribe()
-        assert cid
-        assert isinstance(queue, asyncio.Queue)
+        async def _test():
+            cid, queue = broker.subscribe()
+            assert cid
+            assert isinstance(queue, asyncio.Queue)
+        asyncio.run(_test())
 
     def test_publish_to_subscriber(self):
         broker = SSEBroker()
-        cid, queue = broker.subscribe()
-
-        delivered = asyncio.run(broker.publish("task_created", {"id": "t1"}))
-        assert delivered == 1
-
-        event = queue.get_nowait()
-        assert event.event_type == "task_created"
-        assert event.data["id"] == "t1"
+        async def _test():
+            cid, queue = broker.subscribe()
+            delivered = await broker.publish("task_created", {"id": "t1"})
+            assert delivered == 1
+            event = queue.get_nowait()
+            assert event.event_type == "task_created"
+            assert event.data["id"] == "t1"
+        asyncio.run(_test())
 
     def test_unsubscribe(self):
         broker = SSEBroker()
-        cid, _ = broker.subscribe()
-        assert broker.subscriber_count == 1
-
-        broker.unsubscribe(cid)
-        assert broker.subscriber_count == 0
+        async def _test():
+            cid, _ = broker.subscribe()
+            assert broker.subscriber_count == 1
+            broker.unsubscribe(cid)
+            assert broker.subscriber_count == 0
+        asyncio.run(_test())
 
     def test_publish_no_subscribers(self):
         broker = SSEBroker()
@@ -82,11 +85,12 @@ class TestSSEBroker:
 
     def test_history_replays_to_new_subscriber(self):
         broker = SSEBroker()
-        asyncio.run(broker.publish("e1", {"x": 1}))
-
-        cid, queue = broker.subscribe()
-        event = queue.get_nowait()
-        assert event.event_type == "e1"
+        async def _test():
+            await broker.publish("e1", {"x": 1})
+            cid, queue = broker.subscribe()
+            event = queue.get_nowait()
+            assert event.event_type == "e1"
+        asyncio.run(_test())
 
     def test_history_max(self):
         broker = SSEBroker()
@@ -97,20 +101,23 @@ class TestSSEBroker:
 
     def test_publish_sync(self):
         broker = SSEBroker()
-        cid, queue = broker.subscribe()
-        delivered = broker.publish_sync("tick", {"n": 1})
-        assert delivered == 1
-        event = queue.get_nowait()
-        assert event.data["n"] == 1
+        async def _test():
+            cid, queue = broker.subscribe()
+            delivered = broker.publish_sync("tick", {"n": 1})
+            assert delivered == 1
+            event = queue.get_nowait()
+            assert event.data["n"] == 1
+        asyncio.run(_test())
 
     def test_multiple_subscribers(self):
         broker = SSEBroker()
-        c1, q1 = broker.subscribe()
-        c2, q2 = broker.subscribe()
-
-        asyncio.run(broker.publish("test", {"v": 42}))
-        assert q1.get_nowait().data["v"] == 42
-        assert q2.get_nowait().data["v"] == 42
+        async def _test():
+            c1, q1 = broker.subscribe()
+            c2, q2 = broker.subscribe()
+            await broker.publish("test", {"v": 42})
+            assert q1.get_nowait().data["v"] == 42
+            assert q2.get_nowait().data["v"] == 42
+        asyncio.run(_test())
 
 
 # ---------------------------------------------------------------------------