diff --git a/apps/iot/src/iot.app.src b/apps/iot/src/iot.app.src
index a5667ff..68e206f 100644
--- a/apps/iot/src/iot.app.src
+++ b/apps/iot/src/iot.app.src
@@ -21,6 +21,7 @@
     public_key,
     ssl,
     erts,
+    runtime_tools,
     observer,
     kernel,
     stdlib