diff --git a/FURPS/application/rln_membership_management.md b/FURPS/application/rln_membership_management.md
index dbff9d4..8ff4536 100644
--- a/FURPS/application/rln_membership_management.md
+++ b/FURPS/application/rln_membership_management.md
@@ -12,6 +12,7 @@
 
 1. RLN membership details can be exported and imported.
 2. Deployment details (address, chain id) are persisted by library and in exports.
+3. Create script to extend existing memberships.
 
 ## Reliability
 
diff --git a/draft-roadmap/integrate_rln_with_waku_api.md b/draft-roadmap/integrate_rln_with_waku_api.md
index b636f02..9ccb521 100644
--- a/draft-roadmap/integrate_rln_with_waku_api.md
+++ b/draft-roadmap/integrate_rln_with_waku_api.md
@@ -55,6 +55,7 @@ See deliverables.
 
 - U1. RLN membership details can be exported and imported.
 - U2. Deployment details (address, chain id) are persisted by library and in exports.
+- U3. Create script to extend existing memberships.
 
 - R1. Import and exports are interoperable across all implementations.