diff --git a/runtime/doc/pi_zip.txt b/runtime/doc/pi_zip.txt
index e3312ea9bc..72babb0dea 100644
--- a/runtime/doc/pi_zip.txt
+++ b/runtime/doc/pi_zip.txt
@@ -114,9 +114,9 @@ Copyright: Copyright (C) 2005-2015 Charles E Campbell	 *zip-copyright*
    should be treated as zip files.
 
    Alternatively, one may change *g:zipPlugin_ext* in one's .vimrc.
-   Currently (as of October 2025) it holds: >
+   Currently (as of May 2026) it holds: >
 
-        let g:zipPlugin_ext='*.aar,*.apk,*.celzip,*.crtx,*.docm,*.docx,
+        let g:zipPlugin_ext='*.aar,*.apk,*.cbz,*.celzip,*.crtx,*.docm,*.docx,
        \ *.dotm,*.dotx,*.ear,*.epub,*.gcsx,*.glox,*.gqsx,*.ja,*.jar,*.kmz,
        \ *.odb,*.odc,*.odf,*.odg,*.odi,*.odm,*.odp,*.ods,*.odt,*.otc,*.otf,
        \ *.otg,*.oth,*.oti,*.otp,*.ots,*.ott,*.oxt,*.pkpass,*.potm,*.potx,
diff --git a/runtime/plugin/tarPlugin.vim b/runtime/plugin/tarPlugin.vim
index d661ec64c2..e857ba0a71 100644
--- a/runtime/plugin/tarPlugin.vim
+++ b/runtime/plugin/tarPlugin.vim
@@ -35,6 +35,7 @@ augroup tar
    au FileWriteCmd tarfile::*/*	call tar#Write(expand("<amatch>"))
   endif
 
+  au BufReadCmd   *.cbt			call tar#Browse(expand("<amatch>"))
   au BufReadCmd   *.lrp			call tar#Browse(expand("<amatch>"))
   au BufReadCmd   *.tar			call tar#Browse(expand("<amatch>"))
   au BufReadCmd   *.tar.bz2		call tar#Browse(expand("<amatch>"))
diff --git a/runtime/plugin/zipPlugin.vim b/runtime/plugin/zipPlugin.vim
index a9ab12158b..02d5e978da 100644
--- a/runtime/plugin/zipPlugin.vim
+++ b/runtime/plugin/zipPlugin.vim
@@ -6,6 +6,7 @@
 " Last Change:
 " 2025 Apr 02 by Vim Project: add *.whl to list of zip extensions (#17038)
 " 2025 Oct 06 by MultisampledNight: add *.pkpass to list of zip extensions (#18501)
+" 2026 May 16 by Vim Project: add .cbz extension (#20206)
 " License:		Vim License  (see vim's :help license)
 " Copyright:    Copyright (C) 2005-2016 Charles E. Campbell {{{1
 "               Permission is hereby granted to use and distribute this code,
@@ -31,7 +32,7 @@ set cpo&vim
 " ---------------------------------------------------------------------
 " Options: {{{1
 if !exists("g:zipPlugin_ext")
- let g:zipPlugin_ext='*.aar,*.apk,*.celzip,*.crtx,*.docm,*.docx,*.dotm,*.dotx,*.ear,*.epub,*.gcsx,*.glox,*.gqsx,*.ja,*.jar,*.kmz,*.odb,*.odc,*.odf,*.odg,*.odi,*.odm,*.odp,*.ods,*.odt,*.otc,*.otf,*.otg,*.oth,*.oti,*.otp,*.ots,*.ott,*.oxt,*.pkpass,*.potm,*.potx,*.ppam,*.ppsm,*.ppsx,*.pptm,*.pptx,*.sldx,*.thmx,*.vdw,*.war,*.whl,*.wsz,*.xap,*.xlam,*.xlsb,*.xlsm,*.xlsx,*.xltm,*.xltx,*.xpi,*.zip'
+ let g:zipPlugin_ext='*.aar,*.apk,*.cbz,*.celzip,*.crtx,*.docm,*.docx,*.dotm,*.dotx,*.ear,*.epub,*.gcsx,*.glox,*.gqsx,*.ja,*.jar,*.kmz,*.odb,*.odc,*.odf,*.odg,*.odi,*.odm,*.odp,*.ods,*.odt,*.otc,*.otf,*.otg,*.oth,*.oti,*.otp,*.ots,*.ott,*.oxt,*.pkpass,*.potm,*.potx,*.ppam,*.ppsm,*.ppsx,*.pptm,*.pptx,*.sldx,*.thmx,*.vdw,*.war,*.whl,*.wsz,*.xap,*.xlam,*.xlsb,*.xlsm,*.xlsx,*.xltm,*.xltx,*.xpi,*.zip'
 endif
 
 " ---------------------------------------------------------------------