diff --git a/karma.conf.js b/karma.conf.js
index 05718aa..7ef8602 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -23,7 +23,7 @@ const getTestFiles = (config) => {
 
 module.exports = function karma(config) {
   const localBrowsers = ['Chrome'];
-  const githubBrowsers = ['Chrome', 'Firefox'];
+  const githubBrowsers = ['Chrome'];
 
   let browsers;