diff --git a/packages/core/src/cli/commands/serve.ts b/packages/core/src/cli/commands/serve.ts
index 9f4d8d0..18fd562 100644
--- a/packages/core/src/cli/commands/serve.ts
+++ b/packages/core/src/cli/commands/serve.ts
@@ -68,7 +68,7 @@ async function serve(args: ParsedArgs) {
         {
           watch: true,
           c12: {
-            async onUpdate({ getDiff, newConfig }: unknown) {
+            async onUpdate({ getDiff, newConfig }: any) {
               const diff = getDiff()
 
               if (diff.length === 0) {