diff --git a/testem.js b/testem.js
index 48fa7715..eb6af7ea 100644
--- a/testem.js
+++ b/testem.js
@@ -20,12 +20,12 @@ module.exports = {
         '--remote-debugging-port=0',
         '--window-size=1440,900'
       ].filter(Boolean)
-    },
-    Firefox: {
-      mode: 'ci',
-      args: [
-        '-headless'
-      ].filter(Boolean)
     }
+    // Firefox: {
+    //   mode: 'ci',
+    //   args: [
+    //     '-headless'
+    //   ].filter(Boolean)
+    // }
   }
 };