diff --git a/runtime/lua/vim/filetype.lua b/runtime/lua/vim/filetype.lua
index a53216f8ea..634f5c6a58 100644
--- a/runtime/lua/vim/filetype.lua
+++ b/runtime/lua/vim/filetype.lua
@@ -1049,6 +1049,7 @@ local extension = {
   wat = 'wat',
   wdl = 'wdl',
   wm = 'webmacro',
+  wgsl = 'wgsl',
   wbt = 'winbatch',
   wit = 'wit',
   wml = 'wml',
diff --git a/test/old/testdir/test_filetype.vim b/test/old/testdir/test_filetype.vim
index 57e3c1d1cf..829b825fa4 100644
--- a/test/old/testdir/test_filetype.vim
+++ b/test/old/testdir/test_filetype.vim
@@ -697,6 +697,7 @@ func s:GetFilenameChecks() abort
     \ 'webmacro': ['file.wm'],
     \ 'wget': ['.wgetrc', 'wgetrc'],
     \ 'wget2': ['.wget2rc', 'wget2rc'],
+    \ 'wgsl': ['file.wgsl'],
     \ 'winbatch': ['file.wbt'],
     \ 'wit': ['file.wit'],
     \ 'wml': ['file.wml'],