diff --git a/uvloop/__init__.py b/uvloop/__init__.py
index 214a990..60a8636 100644
--- a/uvloop/__init__.py
+++ b/uvloop/__init__.py
@@ -7,7 +7,7 @@ from . import _patch  # NOQA
 from .loop import Loop as __BaseLoop  # NOQA
 
 
-__version__ = '0.12.2'
+__version__ = '0.12.3.dev0'
 __all__ = ('new_event_loop', 'install', 'EventLoopPolicy')