diff --git a/README.md b/README.md
index 5a82e26..737f58d 100644
--- a/README.md
+++ b/README.md
@@ -160,6 +160,7 @@ Core Language
 * [x] Quoted identifiers @""
 * [x] Anonymous structs/tuples/lists
 * [ ] Async <--- IN PROGRESS!
+* [ ] Interfaces
 
 ## Contributing