diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index ae79c8d8..f347549e 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -56,6 +56,7 @@ Summary
 - [Upgradeable Contract](./applications/upgradeable_contract.md)
 - [Defi Vault](./applications/simple_vault.md)
 - [ERC20 Token](./applications/erc20.md)
+- [NFT Dutch Auction](./applications/nft_dutch_auction.md)
 - [Constant Product AMM](./applications/constant-product-amm.md)
 - [TimeLock](./applications/timelock.md)
 - [Staking](./applications/staking.md)