diff --git a/vitest.config.ts b/vitest.config.ts
index eef2fd5..91c2734 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -1,8 +1,9 @@
-import { defineConfig } from 'vitest/config';
+import { configDefaults, defineConfig } from 'vitest/config';
 
 export default defineConfig({
   test: {
     environment: 'node',
     setupFiles: ['./src/test/setup.ts'],
+    exclude: [...configDefaults.exclude, '**/.worktrees/**'],
   },
 });