diff --git a/taskgroup/__init__.py b/taskgroup/__init__.py
index cbac703..22a7397 100644
--- a/taskgroup/__init__.py
+++ b/taskgroup/__init__.py
@@ -2,7 +2,7 @@
 backport of asyncio.TaskGroup, asyncio.Runner and asyncio.timeout
 """
 
-__version__ = "0.0.0a5"
+__version__ = "0.0.0a6"
 
 __all__ = ["run", "Runner", "TaskGroup", "Timeout", "timeout", "timeout_at"]