diff --git a/__tests__/main.test.ts b/__tests__/main.test.ts
index efcf95e..62ac756 100644
--- a/__tests__/main.test.ts
+++ b/__tests__/main.test.ts
@@ -19,9 +19,10 @@ test('wait 500 ms', async () => {
 // shows how the runner will run a javascript action with env / stdout protocol
 test('test runs', () => {
   process.env['INPUT_MILLISECONDS'] = '500'
+  const np = process.execPath
   const ip = path.join(__dirname, '..', 'lib', 'main.js')
-  const options: cp.ExecSyncOptions = {
+  const options: cp.ExecFileSyncOptions = {
     env: process.env
   }
-  console.log(cp.execSync(`node ${ip}`, options).toString())
+  console.log(cp.execFileSync(np, [ip], options).toString())
 })