diff --git a/cumulus/parachains/chain-specs/contracts-rococo.json b/cumulus/parachains/chain-specs/contracts-rococo.json
index 7d1b84be20c547747bae84c3fbd7fc347aece092..a74ab22e05d522db5dedf8d2ec22188f9114dd0c 100644
--- a/cumulus/parachains/chain-specs/contracts-rococo.json
+++ b/cumulus/parachains/chain-specs/contracts-rococo.json
@@ -3,10 +3,10 @@
   "id": "contracts-rococo",
   "chainType": "Live",
   "bootNodes": [
-    "/ip4/34.90.191.237/tcp/30333/p2p/12D3KooWKg3Rpxcr9oJ8n6khoxpGKWztCZydtUZk2cojHqnfLrpj",
-    "/ip4/35.204.68.28/tcp/30333/p2p/12D3KooWPEXYrz8tHU3nDtPoPw4V7ou5dzMEWSTuUj7vaWiYVAVh",
-    "/ip4/34.90.139.15/tcp/30333/p2p/12D3KooWEVU8AFNary4nP4qEnEcwJaRuy59Wefekzdu9pKbnVEhk",
-    "/ip4/35.204.99.97/tcp/30333/p2p/12D3KooWP6pV3ZmcXzGDjv8ZMgA6nZxfAKDxSz4VNiLx6vVCQgJX"
+    "/dns/contracts-collator-0.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWKg3Rpxcr9oJ8n6khoxpGKWztCZydtUZk2cojHqnfLrpj",
+    "/dns/contracts-collator-1.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWPEXYrz8tHU3nDtPoPw4V7ou5dzMEWSTuUj7vaWiYVAVh",
+    "/dns/contracts-collator-2.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWEVU8AFNary4nP4qEnEcwJaRuy59Wefekzdu9pKbnVEhk",
+    "/dns/contracts-collator-3.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWP6pV3ZmcXzGDjv8ZMgA6nZxfAKDxSz4VNiLx6vVCQgJX"
   ],
   "telemetryEndpoints": null,
   "protocolId": null,
@@ -80,4 +80,4 @@
       "childrenDefault": {}
     }
   }
-}
+}
\ No newline at end of file
diff --git a/cumulus/polkadot-parachain/src/chain_spec.rs b/cumulus/polkadot-parachain/src/chain_spec.rs
index 9b65ac8e59e9e3db61b2e2dbe489d19d8930b112..421e571a0216741fb167baf9f8839d42fc69a9b0 100644
--- a/cumulus/polkadot-parachain/src/chain_spec.rs
+++ b/cumulus/polkadot-parachain/src/chain_spec.rs
@@ -1016,16 +1016,16 @@ pub fn contracts_rococo_config() -> ContractsRococoChainSpec {
 		},
 		// Bootnodes
 		vec![
-			"/ip4/34.90.191.237/tcp/30333/p2p/12D3KooWKg3Rpxcr9oJ8n6khoxpGKWztCZydtUZk2cojHqnfLrpj"
+			"/dns/contracts-collator-0.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWKg3Rpxcr9oJ8n6khoxpGKWztCZydtUZk2cojHqnfLrpj"
 				.parse()
 				.expect("MultiaddrWithPeerId"),
-			"/ip4/35.204.68.28/tcp/30333/p2p/12D3KooWPEXYrz8tHU3nDtPoPw4V7ou5dzMEWSTuUj7vaWiYVAVh"
+			"/dns/contracts-collator-1.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWPEXYrz8tHU3nDtPoPw4V7ou5dzMEWSTuUj7vaWiYVAVh"
 				.parse()
 				.expect("MultiaddrWithPeerId"),
-			"/ip4/34.90.139.15/tcp/30333/p2p/12D3KooWEVU8AFNary4nP4qEnEcwJaRuy59Wefekzdu9pKbnVEhk"
+			"/dns/contracts-collator-2.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWEVU8AFNary4nP4qEnEcwJaRuy59Wefekzdu9pKbnVEhk"
 				.parse()
 				.expect("MultiaddrWithPeerId"),
-			"/ip4/35.204.99.97/tcp/30333/p2p/12D3KooWP6pV3ZmcXzGDjv8ZMgA6nZxfAKDxSz4VNiLx6vVCQgJX"
+			"/dns/contracts-collator-3.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWP6pV3ZmcXzGDjv8ZMgA6nZxfAKDxSz4VNiLx6vVCQgJX"
 				.parse()
 				.expect("MultiaddrWithPeerId"),
 		],