diff --git a/.travis.yml b/.travis.yml
index 02d4c47142..2de2a30cdb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,7 @@ stages:
 
 # defaults
 language: node_js
-node_js: '11.6'
+node_js: '11'
 addons:
   apt:
     packages:
diff --git a/lib/cli/run-helpers.js b/lib/cli/run-helpers.js
index df53117fec..d953a06909 100644
--- a/lib/cli/run-helpers.js
+++ b/lib/cli/run-helpers.js
@@ -25,7 +25,7 @@ const cwd = (exports.cwd = process.cwd());
  */
 const exitMochaLater = code => {
   process.on('exit', () => {
-    process.exit(Math.min(code, 255));
+    process.exitCode = Math.min(code, 255);
   });
 };