diff --git a/TODO.md b/TODO.md
index a8b0ac9..45e45d5 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,6 +1,7 @@
 # TODO
 
 * access lists:
+  * use arc-swap Cache
   * test functionality
     * aquatic_udp
     * aquatic_http