diff --git a/homeassistant/const.py b/homeassistant/const.py
index 7d8a68a9707..b3f99038b59 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -1,7 +1,7 @@
 """Constants used by Home Assistant components."""
 MAJOR_VERSION = 0
 MINOR_VERSION = 100
-PATCH_VERSION = "0.dev0"
+PATCH_VERSION = "0b0"
 __short_version__ = "{}.{}".format(MAJOR_VERSION, MINOR_VERSION)
 __version__ = "{}.{}".format(__short_version__, PATCH_VERSION)
 REQUIRED_PYTHON_VER = (3, 6, 0)