diff --git a/src/omero_version.py b/src/omero_version.py
index 8a0728550..54b5387c3 100644
--- a/src/omero_version.py
+++ b/src/omero_version.py
@@ -1,3 +1,3 @@
-omero_version = "5.6.0"
+omero_version = "5.6.1.dev1"
 ice_compatibility = "3.6.5"
 build_year = "2020"