diff --git a/invokeai/version/invokeai_version.py b/invokeai/version/invokeai_version.py
index 1bdb160e966..da1546b0a0d 100644
--- a/invokeai/version/invokeai_version.py
+++ b/invokeai/version/invokeai_version.py
@@ -1 +1 @@
-__version__ = "4.2.5"
+__version__ = "4.2.6a1"