diff --git a/odc/geo/_version.py b/odc/geo/_version.py
index 5eefbda..15ba425 100644
--- a/odc/geo/_version.py
+++ b/odc/geo/_version.py
@@ -1,3 +1,3 @@
 """version information only."""
 
-__version__ = "0.4.6"
+__version__ = "0.4.7rc1"