diff --git a/lib/version.rb b/lib/version.rb
index 2a496ab..a79cc26 100644
--- a/lib/version.rb
+++ b/lib/version.rb
@@ -1,3 +1,3 @@
 module JekyllToc
-  VERSION = '0.3.0'.freeze
+  VERSION = '0.4.0.rc'.freeze
 end