diff --git a/app/assets/javascripts/discourse/testem.js b/app/assets/javascripts/discourse/testem.js
index e1ef38caed3..e4aadf58511 100644
--- a/app/assets/javascripts/discourse/testem.js
+++ b/app/assets/javascripts/discourse/testem.js
@@ -40,6 +40,7 @@ module.exports = {
       "--remote-debugging-port=4201",
       "--window-size=1440,900",
       "--enable-precise-memory-info",
+      "--js-flags='--max_old_space_size=512 --max_semi_space_size=512'",
     ].filter(Boolean),
     Firefox: ["-headless", "--width=1440", "--height=900"],
     "Headless Firefox": ["--width=1440", "--height=900"],