Index: pook-1.1.0/pook/activate_async.py
===================================================================
--- pook-1.1.0.orig/pook/activate_async.py
+++ pook-1.1.0/pook/activate_async.py
@@ -1,5 +1,5 @@
 import functools
-from asyncio import iscoroutinefunction, coroutine
+from asyncio import iscoroutinefunction
 
 
 def activate_async(fn, _engine):
@@ -13,13 +13,13 @@ def activate_async(fn, _engine):
     Returns:
         function: decorator wrapper function.
     """
-    @coroutine
     @functools.wraps(fn)
-    def wrapper(*args, **kw):
+    async def wrapper(*args, **kw):
         _engine.activate()
         try:
             if iscoroutinefunction(fn):
-                yield from fn(*args, **kw)  # noqa
+                async for v in fn(*args, **kw):
+                    yield v
             else:
                 fn(*args, **kw)
         finally:
Index: pook-1.1.0/tests/unit/mock_test.py
===================================================================
--- pook-1.1.0.orig/tests/unit/mock_test.py
+++ pook-1.1.0/tests/unit/mock_test.py
@@ -19,4 +19,4 @@ def test_mock_url(mock):
 
 
 def test_new_response(mock):
-    assert(mock.reply() != mock.reply(new_response=True, json={}))
+    assert mock.reply() != mock.reply(new_response=True, json={})