diff --git a/runtime/syntax/zsh.vim b/runtime/syntax/zsh.vim
index e16e74e..b4efcdc 100644
--- a/runtime/syntax/zsh.vim
+++ b/runtime/syntax/zsh.vim
@@ -2,7 +2,7 @@
 " Language:             Zsh shell script
 " Maintainer:           Christian Brabandt <cb@256bit.org>
 " Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
-" Latest Revision:      2017-07-11
+" Latest Revision:      2017-11-22
 " License:              Vim (see :h license)
 " Repository:           https://github.com/chrisbra/vim-zsh
 
@@ -324,9 +324,9 @@
       \ \%(\%(\<no_\?\)\?vi\>\)\|
       \ \%(\%(\<no_\?\)\?warncreateglobal\>\)\|\%(\%(no_\?\)\?warn_create_global\>\)\|
       \ \%(\%(\<no_\?\)\?xtrace\>\)\|
-      \ \%(\%(\<no_\?\)\?zle\>\)/ nextgroup=zshOption skipwhite contained
+      \ \%(\%(\<no_\?\)\?zle\>\)/ nextgroup=zshOption,zshComment skipwhite contained
 
-syn keyword zshTypes            float integer local typeset declare private
+syn keyword zshTypes            float integer local typeset declare private readonly
 
 " XXX: this may be too much
 " syn match   zshSwitches         '\s\zs--\=[a-zA-Z0-9-]\+'