diff --git a/Top-Immunefi-Vulnerabilities/README.md b/Top-Immunefi-Vulnerabilities/README.md
index bf4bc2d..3b6dadd 100644
--- a/Top-Immunefi-Vulnerabilities/README.md
+++ b/Top-Immunefi-Vulnerabilities/README.md
@@ -9,6 +9,7 @@
 * [Nexus Mutual Bug](nexus.md)
 * [Polygon Consensus Bypass](polygon.md)
 * [Polygon Lack Of Balance](polygon2.md)
+* [Polygon Double-Spend](polygon3.md)
 * [APWine Incorrect Check of Delegations](apwine.md)
 * [Notional Double Counting Free Collateral](notional.md)
 * [Cronos Theft of Transactions Fees](cronos.md)