diff --git a/documentation/docs/src/nodes/validator-setup.md b/documentation/docs/src/nodes/validator-setup.md
index ea341627ba..b2c1d9c8c3 100644
--- a/documentation/docs/src/nodes/validator-setup.md
+++ b/documentation/docs/src/nodes/validator-setup.md
@@ -175,7 +175,7 @@ laddr = "tcp://0.0.0.0:26656"
 ```
 # Sandbox testnet
 cors_allowed_origins = ["*"]
-persistent_peers = "8421c0a3d90d490e27e8061f2abcb1276c8358b6@sandbox-validator1.nymtech.net:26656"
+persistent_peers = "8421c0a3d90d490e27e8061f2abcb1276c8358b6@sandbox-validator1.nymtech.net:26666"
 create_empty_blocks = false
 laddr = "tcp://0.0.0.0:26656"
 ```