diff --git a/Top-Immunefi-Vulnerabilities/README.md b/Top-Immunefi-Vulnerabilities/README.md
index 8333163..4a7221f 100644
--- a/Top-Immunefi-Vulnerabilities/README.md
+++ b/Top-Immunefi-Vulnerabilities/README.md
@@ -9,3 +9,4 @@
 * [Nexus Mutual Bug](nexus.md)
 * [Polygon Consensus Bypass](polygon.md)
 * [APWine Incorrect Check of Delegations](apwine.md)
+* [Notional Double Counting Free Collateral](notional.md)