diff --git a/config.json b/config.json
index 574ec5e8..8f54bf8c 100644
--- a/config.json
+++ b/config.json
@@ -205,7 +205,9 @@
           "printing"
         ],
         "prerequisites": [
-          "traits"
+          "strings",
+          "traits",
+          "structs"
         ],
         "status": "wip"
       },