diff --git a/packages/time/test/get-running-time.test.js b/packages/time/test/get-running-time.test.js
index b522acdf..ecf5b193 100644
--- a/packages/time/test/get-running-time.test.js
+++ b/packages/time/test/get-running-time.test.js
@@ -36,6 +36,7 @@ it('ignores non-JS files', async () => {
 })
 
 it('works in parallel', async () => {
+  process.env.SIZE_LIMIT_FAKE_TIME = 1
   let times = await Promise.all([
     getRunningTime(EXAMPLE),
     getRunningTime(EXAMPLE),