diff --git a/neovim/dev.nix b/neovim/dev.nix
index e648a8f..8358a4c 100644
--- a/neovim/dev.nix
+++ b/neovim/dev.nix
@@ -69,7 +69,7 @@ in
 
   plugins.style.neoformat.autoformat = {
     enable = true;
-    pattern = [ "*.ts" "*.tsx" "*.rs" "flake.nix" ];
+    pattern = [ "*.ts" "*.mts" "*.cts" "*.tsx" "*.rs" "flake.nix" ];
   };
 
   plugins.navigation = {