diff --git a/src/main/clj/dda/activity_pub_poc/json_ld.clj b/src/main/clj/dda/activity_pub_poc/json_ld.clj
index cb856a3..66b069b 100644
--- a/src/main/clj/dda/activity_pub_poc/json_ld.clj
+++ b/src/main/clj/dda/activity_pub_poc/json_ld.clj
@@ -8,6 +8,7 @@
 
 (def team-url "https://social.meissa-gmbh.de/users/team")
 
+;; TODO: use a real cacheing lib instead of simple atom?
 (def context-cache (atom {}))
 
 (defn json-get [url]