diff --git a/tests/rpc_pipeline_test.py b/tests/rpc_pipeline_test.py
index 82b0b4e..20627f0 100644
--- a/tests/rpc_pipeline_test.py
+++ b/tests/rpc_pipeline_test.py
@@ -212,7 +212,7 @@ def communicate():
             self.assertIsInstance(task, asyncio.Task)
             server.close()
             yield from server.wait_closed()
-            yield from asyncio.sleep(0, loop=self.loop)
+            yield from asyncio.sleep(.1, loop=self.loop)
             self.assertEqual(0, len(server._proto.pending_waiters))
             fut.cancel()
 
diff --git a/tests/rpc_pubsub_test.py b/tests/rpc_pubsub_test.py
index 032f622..8951942 100644
--- a/tests/rpc_pubsub_test.py
+++ b/tests/rpc_pubsub_test.py
@@ -349,7 +349,7 @@ def communicate():
             self.assertIsInstance(task, asyncio.Task)
             server.close()
             yield from server.wait_closed()
-            yield from asyncio.sleep(0, loop=self.loop)
+            yield from asyncio.sleep(.1, loop=self.loop)
             self.assertEqual(0, len(server._proto.pending_waiters))
             fut.cancel()