diff --git a/bridges/bin/millau/node/src/chain_spec.rs b/bridges/bin/millau/node/src/chain_spec.rs
index 3e812ca9aa..66ab997aa7 100644
--- a/bridges/bin/millau/node/src/chain_spec.rs
+++ b/bridges/bin/millau/node/src/chain_spec.rs
@@ -173,8 +173,10 @@ fn endowed_accounts() -> Vec<AccountId> {
 		get_account_id_from_seed::<sr25519::Public>("Rialto.MessagesSender"),
 		// Accounts, used by RialtoParachain<>Millau bridge
 		get_account_id_from_seed::<sr25519::Public>(RIALTO_PARACHAIN_MESSAGES_PALLET_OWNER),
-		get_account_id_from_seed::<sr25519::Public>("RialtoParachain.HeadersAndMessagesRelay"),
-		get_account_id_from_seed::<sr25519::Public>("RialtoParachain.RialtoHeadersRelay"),
+		get_account_id_from_seed::<sr25519::Public>("RialtoParachain.HeadersAndMessagesRelay1"),
+		get_account_id_from_seed::<sr25519::Public>("RialtoParachain.HeadersAndMessagesRelay2"),
+		get_account_id_from_seed::<sr25519::Public>("RialtoParachain.RialtoHeadersRelay1"),
+		get_account_id_from_seed::<sr25519::Public>("RialtoParachain.RialtoHeadersRelay2"),
 		get_account_id_from_seed::<sr25519::Public>("RialtoParachain.MessagesSender"),
 	]
 	.into_iter()
diff --git a/bridges/bin/rialto-parachain/node/src/chain_spec.rs b/bridges/bin/rialto-parachain/node/src/chain_spec.rs
index 6873730c19..4a7865b185 100644
--- a/bridges/bin/rialto-parachain/node/src/chain_spec.rs
+++ b/bridges/bin/rialto-parachain/node/src/chain_spec.rs
@@ -98,7 +98,8 @@ fn endowed_accounts() -> Vec<AccountId> {
 		get_account_id_from_seed::<sr25519::Public>("Ferdie//stash"),
 		// Accounts, used by RialtoParachain<>Millau bridge
 		get_account_id_from_seed::<sr25519::Public>(MILLAU_MESSAGES_PALLET_OWNER),
-		get_account_id_from_seed::<sr25519::Public>("Millau.HeadersAndMessagesRelay"),
+		get_account_id_from_seed::<sr25519::Public>("Millau.HeadersAndMessagesRelay1"),
+		get_account_id_from_seed::<sr25519::Public>("Millau.HeadersAndMessagesRelay2"),
 		get_account_id_from_seed::<sr25519::Public>("Millau.MessagesSender"),
 	]
 	.into_iter()