diff --git a/docs/develop/smart-contracts/environment/testnet.md b/docs/develop/smart-contracts/environment/testnet.md
index 8c55e88a40..9623754d05 100644
--- a/docs/develop/smart-contracts/environment/testnet.md
+++ b/docs/develop/smart-contracts/environment/testnet.md
@@ -20,6 +20,7 @@ For convenience, almost the entire infrastructure of the mainnet (wallets, API,
 * Testnet TON Center API: https://testnet.toncenter.com
 * Testnet HTTP API: https://testnet.tonapi.io/
 * Testnet bridge: https://bridge.ton.org/?testnet=true
+* Testent dTON GraphQL: https://testnet.dton.io/
 
 ## Some third parties