diff --git a/vitest.config.ts b/vitest.config.ts
index 6ec74ee..5664c80 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -2,6 +2,6 @@ import { defineConfig } from 'vitest/config';
 
 export default defineConfig({
   test: {
-    include: ['src/**/*.test.ts'],
+    include: ['src/**/*.test.ts', 'tests/**/*.test.ts'],
   },
 });