Use DeprecationWarning for async()

2 files changed, 2 insertions, 2 deletions

diff --git a/asyncio/tasks.py b/asyncio/tasks.py
index 5840d2a..f617b62 100644
--- a/asyncio/tasks.py
+++ b/asyncio/tasks.py
@@ -506,7 +506,7 @@ def async(coro_or_future, *, loop=None):
     """
 
     warnings.warn("asyncio.async() function is deprecated, use ensure_future()",
-                  RuntimeWarning)
+                  DeprecationWarning)
 
     return ensure_future(coro_or_future, loop=loop)
 
diff --git a/tests/test_tasks.py b/tests/test_tasks.py
index 8c79983..4119085 100644
--- a/tests/test_tasks.py
+++ b/tests/test_tasks.py
@@ -158,7 +158,7 @@ class TaskTests(test_utils.TestCase):
 
     def test_async_warning(self):
         f = asyncio.Future(loop=self.loop)
-        with self.assertWarnsRegex(RuntimeWarning,
+        with self.assertWarnsRegex(DeprecationWarning,
                                    'function is deprecated, use ensure_'):
             self.assertIs(f, asyncio.async(f))