diff --git a/invenio_migrator/version.py b/invenio_migrator/version.py
index a10aeb2..d8ee08e 100644
--- a/invenio_migrator/version.py
+++ b/invenio_migrator/version.py
@@ -30,4 +30,4 @@
 
 from __future__ import absolute_import, print_function
 
-__version__ = "1.0.0a4"
+__version__ = "1.0.0a5.dev20160511"