diff --git a/runtime/syntax/i3config.vim b/runtime/syntax/i3config.vim
index a2f50e5..6163da2 100644
--- a/runtime/syntax/i3config.vim
+++ b/runtime/syntax/i3config.vim
@@ -3,7 +3,7 @@
 " Original Author: Mohamed Boughaba <mohamed dot bgb at gmail dot com>
 " Maintainer: Quentin Hibon (github user hiqua)
 " Version: 0.4
-" Last Change: 2022 Jan 15
+" Last Change: 2022 May 05
 
 " References:
 " http://i3wm.org/docs/userguide.html#configuring
@@ -50,6 +50,10 @@
 syn keyword i3ConfigInitializeKeyword set contained
 syn match i3ConfigInitialize /^\s*set\s\+.*$/ contains=i3ConfigVariable,i3ConfigInitializeKeyword,i3ConfigColor,i3ConfigString
 
+" Include
+syn keyword i3ConfigIncludeKeyword include contained
+syn match i3ConfigInclude /^\s*include\s\+.*$/ contains=i3ConfigIncludeKeyword,i3ConfigString,i3ConfigVariable
+
 " Gaps
 syn keyword i3ConfigGapStyleKeyword inner outer horizontal vertical top right bottom left current all set plus minus toggle up down contained
 syn match i3ConfigGapStyle /^\s*\(gaps\)\s\+\(inner\|outer\|horizontal\|vertical\|left\|top\|right\|bottom\)\(\s\+\(current\|all\)\)\?\(\s\+\(set\|plus\|minus\|toggle\)\)\?\(\s\+\(-\?\d\+\|\$.*\)\)$/ contains=i3ConfigGapStyleKeyword,i3ConfigNumber,i3ConfigVariable
@@ -221,6 +225,7 @@
 hi def link i3ConfigFontNamespace                   PreProc
 hi def link i3ConfigBindArgument                    PreProc
 hi def link i3ConfigNoStartupId                     PreProc
+hi def link i3ConfigIncludeKeyword                  Identifier
 hi def link i3ConfigFontKeyword                     Identifier
 hi def link i3ConfigBindKeyword                     Identifier
 hi def link i3ConfigOrientation                     Identifier