diff --git a/bridges/relays/bin-substrate/src/chains/rococo.rs b/bridges/relays/bin-substrate/src/chains/rococo.rs
index dc8bd64836..fa376f0967 100644
--- a/bridges/relays/bin-substrate/src/chains/rococo.rs
+++ b/bridges/relays/bin-substrate/src/chains/rococo.rs
@@ -27,5 +27,5 @@ impl CliChain for Rococo {
 
 impl CliChain for BridgeHubRococo {
 	const RUNTIME_VERSION: Option<SimpleRuntimeVersion> =
-		Some(SimpleRuntimeVersion { spec_version: 9420, transaction_version: 3 });
+		Some(SimpleRuntimeVersion { spec_version: 1_003_000, transaction_version: 3 });
 }
diff --git a/bridges/relays/bin-substrate/src/chains/westend.rs b/bridges/relays/bin-substrate/src/chains/westend.rs
index 5376fc210e..be26a36627 100644
--- a/bridges/relays/bin-substrate/src/chains/westend.rs
+++ b/bridges/relays/bin-substrate/src/chains/westend.rs
@@ -27,5 +27,5 @@ impl CliChain for Westend {
 
 impl CliChain for BridgeHubWestend {
 	const RUNTIME_VERSION: Option<SimpleRuntimeVersion> =
-		Some(SimpleRuntimeVersion { spec_version: 10000, transaction_version: 3 });
+		Some(SimpleRuntimeVersion { spec_version: 1_003_000, transaction_version: 3 });
 }