diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index 077aa63e0..81ce17415 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -2373,6 +2373,9 @@ au BufNewFile,BufRead *.mts,*.cts		setf typescript
 " TypeScript with React
 au BufNewFile,BufRead *.tsx			setf typescriptreact
 
+" TypeSpec files
+au BufNewFile,BufRead *.tsp			setf typespec
+
 " Motif UIT/UIL files
 au BufNewFile,BufRead *.uit,*.uil		setf uil
 
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 14476cbca..0683feff7 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -756,6 +756,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     typescript: ['file.mts', 'file.cts'],
     'typescript.glimmer': ['file.gts'],
     typescriptreact: ['file.tsx'],
+    typespec: ['file.tsp'],
     ungrammar: ['file.ungram'],
     uc: ['file.uc'],
     udevconf: ['/etc/udev/udev.conf', 'any/etc/udev/udev.conf'],
diff --git a/src/version.c b/src/version.c
index e927c0b01..4c7ab8436 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    253,
 /**/
     252,
 /**/