diff --git a/lib/maildir/version.rb b/lib/maildir/version.rb
index 83e6459..9b265d6 100644
--- a/lib/maildir/version.rb
+++ b/lib/maildir/version.rb
@@ -1,3 +1,3 @@
 class Maildir
-  VERSION = '2.1.0'
+  VERSION = '2.2.0'
 end