diff --git a/packages/objectstore/HISTORY.rst b/packages/objectstore/HISTORY.rst
index 52c2df7066e..3f0cf3174b5 100644
--- a/packages/objectstore/HISTORY.rst
+++ b/packages/objectstore/HISTORY.rst
@@ -6,10 +6,10 @@ History
 .. to_doc
 
 ---------------------
-19.9.1.dev0
+20.5.0.dev0
 ---------------------
 
-
+* First release from the 20.05 branch of Galaxy.
 
 ---------------------
 19.9.0 (2019-12-16)
diff --git a/packages/objectstore/galaxy/project_galaxy_objectstore.py b/packages/objectstore/galaxy/project_galaxy_objectstore.py
index 8389a7251b6..ad72d6781c5 100644
--- a/packages/objectstore/galaxy/project_galaxy_objectstore.py
+++ b/packages/objectstore/galaxy/project_galaxy_objectstore.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-__version__ = '19.9.1.dev0'
+__version__ = '20.5.0.dev0'
 
 PROJECT_NAME = "galaxy-objectstore"
 PROJECT_OWNER = PROJECT_USERAME = "galaxyproject"