diff --git a/runtime/ftplugin/wast.vim b/runtime/ftplugin/wat.vim
similarity index 93%
rename from runtime/ftplugin/wast.vim
rename to runtime/ftplugin/wat.vim
index 0d9e98d..35d2d6a 100644
--- a/runtime/ftplugin/wast.vim
+++ b/runtime/ftplugin/wat.vim
@@ -1,7 +1,7 @@
 " Vim filetype plugin file
 " Language:     WebAssembly
 " Maintainer:   rhysd <lin90162@yahoo.co.jp>
-" Last Change:  Jul 29, 2018
+" Last Change:  Nov 14, 2023
 " For bugs, patches and license go to https://github.com/rhysd/vim-wasm
 
 if exists("b:did_ftplugin")