diff --git a/test/cli/vitest.config.ts b/test/cli/vitest.config.ts
index 13d54ae69..181d8e31e 100644
--- a/test/cli/vitest.config.ts
+++ b/test/cli/vitest.config.ts
@@ -6,8 +6,8 @@ export default defineConfig({
     reporters: ['verbose'],
     testTimeout: 60_000,
     poolOptions: {
-      threads: {
-        singleThread: true,
+      forks: {
+        singleFork: true,
       },
     },
     chaiConfig: {