diff --git a/aider/__init__.py b/aider/__init__.py
index 9da2f8fcc..6e1a5d921 100644
--- a/aider/__init__.py
+++ b/aider/__init__.py
@@ -1 +1 @@
-__version__ = "0.15.0"
+__version__ = "0.15.1-dev"