diff --git a/apps/web/vitest.config.ts b/apps/web/vitest.config.ts
index 28b0de0..75dcfa5 100644
--- a/apps/web/vitest.config.ts
+++ b/apps/web/vitest.config.ts
@@ -1,10 +1,17 @@
-import { defineConfig } from 'vitest/config'
-import path from 'path'
+import path from 'node:path'
+import { defineConfig, mergeConfig } from 'vitest/config'
+import viteConfig from './vite.config'
 
-export default defineConfig({
-  resolve: {
-    alias: {
-      '@': path.resolve(__dirname, './src'),
+export default mergeConfig(
+  viteConfig,
+  defineConfig({
+    resolve: {
+      alias: {
+        '@cfdm/ui/lib/utils': path.resolve(
+          __dirname,
+          '../../packages/ui/src/lib/utils.ts',
+        ),
+      },
     },
-  },
-})
+  }),
+)