diff --git a/MEV_and_trading/vaults/README.md b/MEV_and_trading/vaults/README.md
index 0097582..79b07dc 100644
--- a/MEV_and_trading/vaults/README.md
+++ b/MEV_and_trading/vaults/README.md
@@ -13,9 +13,12 @@
 
 
 * [ERC-4626](ERC-4626.md)
+* [openeden, smart contract t-bills vault](openeden.md)
 
 <br>
 
 ---
 
 ### resources
+
+<br>