diff --git a/runtime/syntax/datascript.vim b/runtime/syntax/datascript.vim
index 2b4ec51..a983b8e 100644
--- a/runtime/syntax/datascript.vim
+++ b/runtime/syntax/datascript.vim
@@ -1,11 +1,12 @@
 " Vim syntax file
-" Language:	Datascript
+" Language:	DataScript
 " Maintainer:	Dominique Pelle <dominique.pelle@gmail.com>
-" Last Change:	2014 Feb 26
+" Last Change:	2015 Jul 30
 "
 " DataScript is a formal language for modelling binary datatypes,
 " bitstreams or file formats. For more information, see:
-" http://datascript.berlios.de/DataScriptLanguageOverview.html
+"
+" http://dstools.sourceforge.net/DataScriptLanguageOverview.html
 
 if version < 600
   syntax clear
@@ -19,6 +20,8 @@
 syn keyword dsType         bit bool string
 syn keyword dsType         int int8 int16 int32 int64
 syn keyword dsType         uint8 uint16 uint32 uint64
+syn keyword dsType         varint16 varint32 varint64
+syn keyword dsType         varuint16 varuint32 varuint64
 syn keyword dsType         leint16 leint32 leint64
 syn keyword dsType         leuint16 leuint32 leuint64
 syn keyword dsEndian       little big
@@ -32,7 +35,8 @@
 syn keyword dsStorageClass const
 syn keyword dsTodo         contained TODO FIXME XXX
 syn keyword dsSql          sql sql_table sql_database sql_pragma sql_index
-syn keyword dsSql          sql_integer sql_metadata sql_key foreign_key
+syn keyword dsSql          sql_integer sql_metadata sql_key sql_virtual
+syn keyword dsSql          using reference_key foreign_key to
 
 " dsCommentGroup allows adding matches for special things in comments.
 syn cluster dsCommentGroup  contains=dsTodo
@@ -61,6 +65,8 @@
 syn region  dsString
   \ start=+L\="+ skip=+\\\\\|\\"+ end=+"+ contains=@Spell
 
+syn sync ccomment dsComment
+
 " Define the default highlighting.
 hi def link dsType              Type
 hi def link dsEndian            StorageClass