diff --git a/polkadot/runtime/rococo/src/lib.rs b/polkadot/runtime/rococo/src/lib.rs
index e694fed8a378..f75cf5bd5b75 100644
--- a/polkadot/runtime/rococo/src/lib.rs
+++ b/polkadot/runtime/rococo/src/lib.rs
@@ -168,7 +168,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_version: 1_012_000,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
-	transaction_version: 25,
+	transaction_version: 26,
 	state_version: 1,
 };
 
diff --git a/polkadot/runtime/westend/src/lib.rs b/polkadot/runtime/westend/src/lib.rs
index 156f6c569ad3..eb7788cbbbed 100644
--- a/polkadot/runtime/westend/src/lib.rs
+++ b/polkadot/runtime/westend/src/lib.rs
@@ -160,7 +160,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_version: 1_012_000,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
-	transaction_version: 25,
+	transaction_version: 26,
 	state_version: 1,
 };