diff --git a/libvalkey/version.py b/libvalkey/version.py
index 528787c..8bc3e3c 100644
--- a/libvalkey/version.py
+++ b/libvalkey/version.py
@@ -1 +1 @@
-__version__ = "3.0.0"
+__version__ = "4.0.0b1"