diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index b233359f1e..de2b4ef223 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -165,7 +165,7 @@ syn match	vimNumber	'\%(^\|\A\)\zs#\x\{6}'		skipwhite nextgroup=vimGlobal,vimSub
 syn case match
 
 " All vimCommands are contained by vimIsCommand. {{{2
-syn cluster vimCmdList	contains=vimAbb,vimAddress,vimAutoCmd,vimAugroup,vimBehave,vimCatch,vimDef,@vimEcho,vimEnddef,vimEndfunction,vimExecute,vimIsCommand,vimExtCmd,vimFor,vimFunction,vimGlobal,vimHighlight,vimLet,vimMap,vimMark,vimNotFunc,vimNorm,vimSet,vimSyntax,vimThrow,vimUnlet,vimUnmap,vimUserCmd,vimMenu,vimMenutranslate
+syn cluster vimCmdList	contains=vimAbb,vimAddress,vimAutoCmd,vimAugroup,vimBehave,vimCatch,vimDef,@vimEcho,vimEnddef,vimEndfunction,vimExecute,vimIsCommand,vimExtCmd,vimFor,vimFunction,vimGlobal,vimHighlight,vimLet,vimMap,vimMark,vimNotFunc,vimNorm,vimSet,vimSleep,vimSyntax,vimThrow,vimUnlet,vimUnmap,vimUserCmd,vimMenu,vimMenutranslate
 syn match vimCmdSep	"[:|]\+"	skipwhite nextgroup=@vimCmdList,vimSubst1
 syn match vimIsCommand	"\<\%(\h\w*\|[23]mat\%[ch]\)\>"	contains=vimCommand
 syn match vimVar	      contained	"\<\h[a-zA-Z0-9#_]*\>"
@@ -647,6 +647,12 @@ syn match vimNotFunc	"\<if\>\|\<el\%[seif]\>\|\<retu\%[rn]\>\|\<while\>"	skipwhi
 syn match	vimNorm		"\<norm\%[al]!\=" skipwhite nextgroup=vimNormCmds
 syn match	vimNormCmds contained	".*$"
 
+" Sleep: {{{2
+" =====
+syn keyword	vimSleep		sl[eep]		skipwhite nextgroup=vimSleepBang,vimSleepArg
+syn match	vimSleepBang	contained	"\a\@1<=!"		skipwhite nextgroup=vimSleepArg
+syn match	vimSleepArg	contained	"\<\%(\d\+\)\=m\=\>"
+
 " Syntax: {{{2
 "=======
 syn match	vimGroupList	contained	"[^[:space:],]\+\%(\s*,\s*[^[:space:],]\+\)*" contains=vimGroupSpecial
@@ -1190,6 +1196,9 @@ if !exists("skip_vim_syntax_inits")
  hi def link vimSetSep	Statement
  hi def link vimSetString	vimString
  hi def link vim9Vim9Script	vimCommand
+ hi def link vimSleep	vimCommand
+ hi def link vimSleepArg	Constant
+ hi def link vimSleepBang	vimBang
  hi def link vimSpecFile	Identifier
  hi def link vimSpecFileMod	vimSpecFile
  hi def link vimSpecial	Type