diff --git a/runtime/ftplugin/just.vim b/runtime/ftplugin/just.vim
index 6f2acddf9..7cf188a77 100644
--- a/runtime/ftplugin/just.vim
+++ b/runtime/ftplugin/just.vim
@@ -2,6 +2,7 @@
" Language: Justfile
" Maintainer: Peter Benjamin <@pbnj>
" Last Change: 2025 Jan 19
+" 2026 May 17 by Vim Project: add 'suffixesadd' #20197
" Credits: The original author, Noah Bogart <https://github.com/NoahTheDuke/vim-just/>
" Only do this when not done yet for this buffer
@@ -13,5 +14,6 @@ let b:did_ftplugin = 1
setlocal iskeyword+=-
setlocal comments=n:#
setlocal commentstring=#\ %s
+setlocal suffixesadd=.just