diff --git a/Cargo.lock b/Cargo.lock
index d356d63f14..07b38c6138 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -9678,7 +9678,7 @@ dependencies = [
 
 [[package]]
 name = "substrate-relay"
-version = "1.7.1"
+version = "1.7.2"
 dependencies = [
  "anyhow",
  "async-std",
diff --git a/relay-clients/client-polkadot/src/lib.rs b/relay-clients/client-polkadot/src/lib.rs
index a32ff0434a..a04607d207 100644
--- a/relay-clients/client-polkadot/src/lib.rs
+++ b/relay-clients/client-polkadot/src/lib.rs
@@ -122,5 +122,5 @@ impl ChainWithTransactions for Polkadot {
 
 impl ChainWithRuntimeVersion for Polkadot {
 	const RUNTIME_VERSION: Option<SimpleRuntimeVersion> =
-		Some(SimpleRuntimeVersion { spec_version: 1_002_000, transaction_version: 25 });
+		Some(SimpleRuntimeVersion { spec_version: 1_003_003, transaction_version: 26 });
 }
diff --git a/substrate-relay/Cargo.toml b/substrate-relay/Cargo.toml
index 603bdd0b54..4e82d8bdfe 100644
--- a/substrate-relay/Cargo.toml
+++ b/substrate-relay/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "substrate-relay"
-version = "1.7.1"
+version = "1.7.2"
 authors.workspace = true
 edition.workspace = true
 license = "GPL-3.0-or-later WITH Classpath-exception-2.0"