diff --git a/runtime/syntax/generator/vim.vim.base b/runtime/syntax/generator/vim.vim.base
index 650f416137..40139de24b 100644
--- a/runtime/syntax/generator/vim.vim.base
+++ b/runtime/syntax/generator/vim.vim.base
@@ -2,7 +2,7 @@
 " Language:	   Vim script
 " Maintainer:	   Hirohito Higashi <h.east.727 ATMARK gmail.com>
 "	   Doug Kearns <dougkearns@gmail.com>
-" Last Change:	   2025 Oct 22
+" Last Change:	   2025 Oct 27
 " Former Maintainer: Charles E. Campbell
 
 " DO NOT CHANGE DIRECTLY.
@@ -318,7 +318,7 @@ syn match	vimDebuggreedy	"\<0\=debugg\%[reedy]\>" contains=vimCount
 
 " Defer {{{2
 " =====
-syn match	vimDefer	"\<defer\=\>"	skipwhite nextgroup=@vimFunc
+syn match	vimDefer	"\<defer\=\>"	skipwhite nextgroup=@vimFunc,vim9LambdaParams
 
 " Exception Handling {{{2
 syn keyword	vimThrow	th[row]	skipwhite nextgroup=@vimExprList
diff --git a/runtime/syntax/testdir/dumps/vim_ex_defer_00.dump b/runtime/syntax/testdir/dumps/vim_ex_defer_00.dump
index c6856763f4..d5a5f5f26a 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_defer_00.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_defer_00.dump
@@ -10,11 +10,11 @@
 |d+0#af5f00255&|e|f| +0#0000000&|B|a|r|(+0#e000e06&|)| +0#0000000&@65
 @2|d+0#af5f00255&|e|f|e|r| +0#0000000&|d+0#00e0e07&|e|l|e|t|e|(+0#e000e06&|"+0#e000002&|t|m|p|f|i|l|e|"|)+0#e000e06&| +0#0000000&@49
 @2|d+0#af5f00255&|e|f|e|r| +0#0000000&|D+0#0000001#ffff4012|e|l|e|t|e|(+0#e000e06#ffffff0|"+0#e000002&|t|m|p|f|i|l|e|"|)+0#e000e06&| +0#0000000&@49
+@2|d+0#af5f00255&|e|f|e|r| +0#0000000&|(+0#e000e06&|)| +0#0000000&|=+0#af5f00255&|>| +0#0000000&|{+0#e000e06&| +0#0000000&@59
+@4|e+0#af5f00255&|c|h|o| +0#0000000&|"+0#e000002&|.@2|"| +0#0000000&@60
+@2|}+0#e000e06&|(|)| +0#0000000&@69
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 @75
 |~+0#4040ff13&| @73
 |~| @73
-|~| @73
-|~| @73
-|~| @73
 | +0#0000000&@56|1|,|1| @10|A|l@1| 
diff --git a/runtime/syntax/testdir/input/vim_ex_defer.vim b/runtime/syntax/testdir/input/vim_ex_defer.vim
index 146237d7dc..dd74f0c6ef 100644
--- a/runtime/syntax/testdir/input/vim_ex_defer.vim
+++ b/runtime/syntax/testdir/input/vim_ex_defer.vim
@@ -10,5 +10,8 @@ endfunction
 def Bar()
   defer delete("tmpfile")
   defer Delete("tmpfile")
+  defer () => {
+    echo "..."
+  }()
 enddef
 
diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index 2fcfc8dd79..19d2a8d50d 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -2,7 +2,7 @@
 " Language:	   Vim script
 " Maintainer:	   Hirohito Higashi <h.east.727 ATMARK gmail.com>
 "	   Doug Kearns <dougkearns@gmail.com>
-" Last Change:	   2025 Oct 26
+" Last Change:	   2025 Oct 27
 " Former Maintainer: Charles E. Campbell
 
 " DO NOT CHANGE DIRECTLY.
@@ -372,7 +372,7 @@ syn match	vimDebuggreedy	"\<0\=debugg\%[reedy]\>" contains=vimCount
 
 " Defer {{{2
 " =====
-syn match	vimDefer	"\<defer\=\>"	skipwhite nextgroup=@vimFunc
+syn match	vimDefer	"\<defer\=\>"	skipwhite nextgroup=@vimFunc,vim9LambdaParams
 
 " Exception Handling {{{2
 syn keyword	vimThrow	th[row]	skipwhite nextgroup=@vimExprList