diff --git a/metomi/rose/__init__.py b/metomi/rose/__init__.py
index bb4b1b756..d072086e4 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__ = "2.7.0"
+__version__ = "2.7.1.dev"