diff --git a/src/config/user.js b/src/config/user.js
index d7efeb75f..123febe74 100644
--- a/src/config/user.js
+++ b/src/config/user.js
@@ -172,6 +172,7 @@ export const config = async (searchFrom) => {
       searchPlaces: [
         'package.json',
         '.aegir.js',
+        '.aegir.mjs',
         '.aegir.cjs'
       ]
     })