diff --git a/config.yaml b/config.yaml
index 1c106e30..3aea443b 100644
--- a/config.yaml
+++ b/config.yaml
@@ -122,6 +122,7 @@ PHONE_APPLICATIONS_FOREGROUND:
     RAPIDS:
       COMPUTE: True
       INCLUDE_EPISODE_FEATURES: True
+      # TODO: Set the categories below to reflect the catalogue.
       SINGLE_CATEGORIES: ["all", "email"]
       MULTIPLE_CATEGORIES:
         social: ["socialnetworks", "socialmediatools"]