diff --git a/substrate/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.compact.wasm b/substrate/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.compact.wasm
index a1f28badf2..78d74d8d2e 100644
Binary files a/substrate/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.compact.wasm and b/substrate/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.compact.wasm differ
diff --git a/substrate/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.wasm b/substrate/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.wasm
index 160550b5c7..24914541bb 100644
Binary files a/substrate/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.wasm and b/substrate/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.wasm differ
diff --git a/substrate/substrate/primitives/src/block.rs b/substrate/substrate/primitives/src/block.rs
index 10315d2309..518c365b87 100644
--- a/substrate/substrate/primitives/src/block.rs
+++ b/substrate/substrate/primitives/src/block.rs
@@ -92,7 +92,7 @@ impl NonTrivialSlicable for Digest { }
 
 /// Generic types to be specialised later.
 pub mod generic {
-	use super::{Header, Slicable, Input, NonTrivialSlicable};
+	use super::{Header, Slicable, Input, NonTrivialSlicable, Vec};
 
 	/// A Block - this is generic for later specialisation in particular runtimes.
 	#[derive(PartialEq, Eq, Clone)]
diff --git a/substrate/substrate/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.compact.wasm b/substrate/substrate/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.compact.wasm
index 5007dd36a2..7903ef8fea 100644
Binary files a/substrate/substrate/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.compact.wasm and b/substrate/substrate/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.compact.wasm differ
diff --git a/substrate/substrate/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.wasm b/substrate/substrate/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.wasm
index a57d2f1fd4..718d15051d 100644
Binary files a/substrate/substrate/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.wasm and b/substrate/substrate/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.wasm differ