diff --git a/metomi/rose/__init__.py b/metomi/rose/__init__.py
index c609839bf..c0b949ed1 100644
--- a/metomi/rose/__init__.py
+++ b/metomi/rose/__init__.py
@@ -144,4 +144,4 @@
 # Paths in the Rose distribution.
 FILEPATH_README = "README.md"
 
-__version__ = "2.4.1.dev"
+__version__ = "2.5.0.dev"