diff --git a/core/lib/spree/core/version.rb b/core/lib/spree/core/version.rb
index 1f8db0e0472..4814f8d91fa 100644
--- a/core/lib/spree/core/version.rb
+++ b/core/lib/spree/core/version.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Spree
-  VERSION = "4.2.0"
+  VERSION = "4.2.1.dev"
 
   def self.solidus_version
     VERSION