diff --git a/testem.json b/testem.json
index b697025a..1a646c5c 100644
--- a/testem.json
+++ b/testem.json
@@ -3,9 +3,9 @@
   "test_page": "tests/index.html?hidepassed",
   "disable_watching": true,
   "launch_in_ci": [
-    "Chrome"
+    "Firefox"
   ],
   "launch_in_dev": [
-    "Chrome"
+    "Firefox"
   ]
 }