diff --git a/neovim/languages/css.nix b/neovim/languages/css.nix
index 8206c8ef..0788c69f 100644
--- a/neovim/languages/css.nix
+++ b/neovim/languages/css.nix
@@ -5,8 +5,9 @@
       (lib.meta.getExe pkgs.vscode-css-languageserver)
       "--stdio"
     ];
-    languages = {
-      css.enable = true;
+    languages.css = {
+      enable = true;
+      format.type = [ "biome" ];
     };
   };
 }