diff --git a/index.js b/index.js
index cba85ff..1d1e279 100644
--- a/index.js
+++ b/index.js
@@ -23,6 +23,7 @@
       "level": "Elementary",
       "desc": "description",
       "license": "CC BY-NC-ND 3.0",
+      "lang": "el",
       "dir": "hybrid-mpi"
 }
 ]