diff --git a/setup.py b/setup.py
index 5b00804..be71348 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@
     readme = f.read()
 
 
-VERSION = '0.4.5'
+VERSION = '0.5.0-rc.1'
 NAME = 'DeepCell_Tracking'
 DESCRIPTION = 'Tracking cells and lineage with deep learning.'
 LICENSE = 'LICENSE'