diff --git a/series/inf.json b/series/inf.json
index b52c16b..d39e39d 100644
--- a/series/inf.json
+++ b/series/inf.json
@@ -55,6 +55,12 @@
       "repo": "lab-rv32i-c-structures",
       "branch": "deploy",
       "title": "rv32i-c / structures"
+    },
+    {
+      "id": "heap4",
+      "repo": "lab-rv32i-freertos-heap4",
+      "branch": "deploy",
+      "title": "rv32i-freertos / heap4"
     }
   ]
 }