diff --git a/perl/Changes b/perl/Changes
index 82174feb..b506234b 100644
--- a/perl/Changes
+++ b/perl/Changes
@@ -1,3 +1,8 @@
+0.28
+
+    - added more tests(gfx)
+    - refactor the PP code(gfx)
+
 0.27
 
     - * 6d9a629 perl: modified trivial codes in PP::Unpacker(makamaka)
diff --git a/perl/lib/Data/MessagePack.pm b/perl/lib/Data/MessagePack.pm
index 5e01b083..1fccbf75 100644
--- a/perl/lib/Data/MessagePack.pm
+++ b/perl/lib/Data/MessagePack.pm
@@ -3,7 +3,7 @@ use strict;
 use warnings;
 use 5.008001;
 
-our $VERSION = '0.27';
+our $VERSION = '0.28';
 our $PreferInteger = 0;
 
 sub true () {