diff --git a/runtime/syntax/sudoers.vim b/runtime/syntax/sudoers.vim
index df1eb99..31f5f2b 100644
--- a/runtime/syntax/sudoers.vim
+++ b/runtime/syntax/sudoers.vim
@@ -1,7 +1,8 @@
 " Vim syntax file
 " Language:             sudoers(5) configuration files
 " Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
-" Latest Revision:      2011-02-24
+" Latest Revision:      2018-07-19
+" Recent Changes:	Support for #include and #includedir.
 
 if exists("b:current_syntax")
   finish
@@ -24,6 +25,7 @@
 syn keyword sudoersTodo               contained TODO FIXME XXX NOTE
 
 syn region  sudoersComment            display oneline start='#' end='$' contains=sudoersTodo
+syn region  sudoersInclude            display oneline start='#\(include\|includedir\)' end='$'
 
 syn keyword sudoersAlias              User_Alias Runas_Alias nextgroup=sudoersUserAlias skipwhite skipnl
 syn keyword sudoersAlias              Host_Alias nextgroup=sudoersHostAlias skipwhite skipnl
@@ -335,6 +337,7 @@
 hi def link sudoersStringValue              String
 hi def link sudoersListValue                String
 hi def link sudoersPASSWD                   Special
+hi def link sudoersInclude                  Statement
 
 let b:current_syntax = "sudoers"