diff --git a/testem.js b/testem.js
index 63d1edf5..ca6746a2 100644
--- a/testem.js
+++ b/testem.js
@@ -1,4 +1,4 @@
-/* eslint-env node */
+/* eslint-disable camelcase */
 module.exports = {
   test_page: 'tests/index.html?hidepassed',
   disable_watching: true,
@@ -10,13 +10,17 @@ module.exports = {
   ],
   browser_args: {
     Chrome: {
-      mode: 'ci',
-      args: [
-        '--disable-gpu',
+      ci: [
+        // --no-sandbox is needed when running Chrome inside a container
+        process.env.CI ? '--no-sandbox' : null,
         '--headless',
+        '--disable-gpu',
+        '--disable-dev-shm-usage',
+        '--disable-software-rasterizer',
+        '--mute-audio',
         '--remote-debugging-port=0',
         '--window-size=1440,900'
-      ]
+      ].filter(Boolean)
     }
   }
 };