diff --git a/polkadot/runtime/rococo/src/lib.rs b/polkadot/runtime/rococo/src/lib.rs
index dd547f84c0..8a3b971598 100644
--- a/polkadot/runtime/rococo/src/lib.rs
+++ b/polkadot/runtime/rococo/src/lib.rs
@@ -102,7 +102,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	apis: RUNTIME_API_VERSIONS,
 	#[cfg(feature = "disable-runtime-api")]
 	apis: sp_version::create_apis_vec![[]],
-	transaction_version: 0,
+	transaction_version: 1,
 	state_version: 0,
 };