diff --git a/lib/mail_catcher/version.rb b/lib/mail_catcher/version.rb
index 850eb90a..2f1dfec8 100644
--- a/lib/mail_catcher/version.rb
+++ b/lib/mail_catcher/version.rb
@@ -1,3 +1,3 @@
 module MailCatcher
-  VERSION = "0.6.0"
+  VERSION = "0.6.0pre1"
 end