diff --git a/python/ray/__init__.py b/python/ray/__init__.py
index 56061f075a154..90e3d09bf7745 100644
--- a/python/ray/__init__.py
+++ b/python/ray/__init__.py
@@ -97,7 +97,7 @@
 from ray.runtime_context import _get_runtime_context  # noqa: E402
 
 # Ray version string.
-__version__ = "0.7.2"
+__version__ = "0.8.0.dev2"
 
 __all__ = [
     "global_state",