diff --git a/bitsandbytes/__init__.py b/bitsandbytes/__init__.py
index 87307a9d2..e54e933d9 100644
--- a/bitsandbytes/__init__.py
+++ b/bitsandbytes/__init__.py
@@ -24,6 +24,6 @@
     "optim.optimizer.MockArgs": False,
 }
 
-__version__ = "0.42.0"
+__version__ = "0.43.0.dev"
 
 PACKAGE_GITHUB_URL = "https://github.com/TimDettmers/bitsandbytes"