diff --git a/content/docs/rfcs/31/README.md b/content/docs/rfcs/31/README.md
index f1e34555..293890d9 100644
--- a/content/docs/rfcs/31/README.md
+++ b/content/docs/rfcs/31/README.md
@@ -150,6 +150,9 @@ MUST filter out participant records that do not implement this field or do not h
 - In addition, such nodes MAY choose to filter participants on specific flags (such as supported protocols),
 or further interpret the `waku2` field as required by the application.
 
+# Copyright
+
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).
 
 # References