diff --git a/lib/API/Deploy.js b/lib/API/Deploy.js
index 4c0de6db..8d9f5024 100644
--- a/lib/API/Deploy.js
+++ b/lib/API/Deploy.js
@@ -67,7 +67,7 @@ module.exports = function(CLI) {
     // Find ecosystem file by default
     if (!Common.isConfigFile(file)) {
       env = args[0];
-      var defaultConfigNames = ['ecosystem.config.js', 'ecosystem.json', 'ecosystem.json5', 'package.json'];
+      var defaultConfigNames = ['ecosystem.config.js', 'ecosystem.config.cjs', 'ecosystem.config.mjs', 'ecosystem.json', 'ecosystem.json5', 'package.json'];
       file = Utility.whichFileExists(defaultConfigNames);
 
       if (!file) {