diff --git a/scripts/tasks/jest.js b/scripts/tasks/jest.js
index 5c7a9c6c1568bb..f81251b26c0e04 100644
--- a/scripts/tasks/jest.js
+++ b/scripts/tasks/jest.js
@@ -21,10 +21,8 @@ module.exports = function (options) {
       // Forces test results output highlighting even if stdout is not a TTY.
       '--colors',
 
-      // Run tests in serial (parallel builds seem to hang rush.)
-      // On Windows, this is occasionally an issue: https://github.com/facebook/jest/issues/4444
-      // Temporarily run sequentially on Windows until jest is upgraded.
-      process.env.TRAVIS || process.platform === 'win32' ? `--runInBand` : undefined,
+      // On Travis, run tests in serial as supposedly, the free Travis build terminates if multiple processes are spun up.
+      process.env.TRAVIS ? `--runInBand` : undefined,
 
       // In production builds, produce coverage information.
       options.isProduction && '--coverage',