diff --git a/lib/shoulda/matchers/version.rb b/lib/shoulda/matchers/version.rb
index 6a2f24842..88f2f5746 100644
--- a/lib/shoulda/matchers/version.rb
+++ b/lib/shoulda/matchers/version.rb
@@ -1,6 +1,6 @@
 module Shoulda
   module Matchers
     # @private
-    VERSION = '3.1.2'.freeze
+    VERSION = '4.0.0.rc1'.freeze
   end
 end