diff --git a/runtime/syntax/cpp.vim b/runtime/syntax/cpp.vim
index d669206..5a478fb 100644
--- a/runtime/syntax/cpp.vim
+++ b/runtime/syntax/cpp.vim
@@ -2,7 +2,7 @@
 " Language:	C++
 " Current Maintainer:	vim-jp (https://github.com/vim-jp/vim-cpp)
 " Previous Maintainer:	Ken Shan <ccshan@post.harvard.edu>
-" Last Change:	2016 Jul 07
+" Last Change:	2016 Oct 28
 
 " quit when a syntax file was already loaded
 if exists("b:current_syntax")
@@ -31,7 +31,7 @@
 " C++ 11 extensions
 if !exists("cpp_no_cpp11")
   syn keyword cppModifier	override final
-  syn keyword cppType		nullptr_t
+  syn keyword cppType		nullptr_t auto
   syn keyword cppExceptions	noexcept
   syn keyword cppStorageClass	constexpr decltype thread_local
   syn keyword cppConstant	nullptr
@@ -46,7 +46,11 @@
 
 " C++ 14 extensions
 if !exists("cpp_no_cpp14")
-  syn match cppNumber		display "\<0b[01]\+\(u\=l\{0,2}\|ll\=u\)\>"
+  syn case ignore
+  syn match cppNumber		display "\<0b[01]\('\=[01]\+\)*\(u\=l\{0,2}\|ll\=u\)\>"
+  syn match cppNumber		display "\<[1-9]\('\=\d\+\)*\(u\=l\{0,2}\|ll\=u\)\>"
+  syn match cppNumber		display "\<0x\x\('\=\x\+\)*\(u\=l\{0,2}\|ll\=u\)\>"
+  syn case match
 endif
 
 " The minimum and maximum operators in GNU C++