diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index cfd7fcc8..47a2755a 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -643,6 +643,10 @@ Ioke:
   color: "#078193"
   primary_extension: .ik
 
+J:
+  type: programming
+  primary_extension: .ijs
+
 JSON:
   type: data
   group: JavaScript