diff --git a/lib/rbstar.rb b/lib/rbstar.rb
index 141aaf7..110704e 100644
--- a/lib/rbstar.rb
+++ b/lib/rbstar.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module RbStar
-  VERSION = '1.3.0'
+  VERSION = '1.4.0'
 
   class Board
     attr_reader :board,