diff --git a/polkadot/Cargo.lock b/polkadot/Cargo.lock
index c302841dd26a62de56303b985383cdb30c5802af..6e90fc301b660d65e7d3fe335d1ab83e1ef15450 100644
--- a/polkadot/Cargo.lock
+++ b/polkadot/Cargo.lock
@@ -452,7 +452,7 @@ checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
 [[package]]
 name = "beefy-gadget"
 version = "0.1.0"
-source = "git+https://github.com/paritytech/grandpa-bridge-gadget?branch=master#7fa0c1c084f88b56c5b4515e8ff94d25330d2e97"
+source = "git+https://github.com/paritytech/grandpa-bridge-gadget?branch=master#846e0ef3b929d8922ddadaaea8e664754fada39a"
 dependencies = [
  "beefy-primitives",
  "futures 0.3.14",
@@ -479,7 +479,7 @@ dependencies = [
 [[package]]
 name = "beefy-gadget-rpc"
 version = "0.1.0"
-source = "git+https://github.com/paritytech/grandpa-bridge-gadget?branch=master#7fa0c1c084f88b56c5b4515e8ff94d25330d2e97"
+source = "git+https://github.com/paritytech/grandpa-bridge-gadget?branch=master#846e0ef3b929d8922ddadaaea8e664754fada39a"
 dependencies = [
  "beefy-gadget",
  "beefy-primitives",
@@ -500,7 +500,7 @@ dependencies = [
 [[package]]
 name = "beefy-primitives"
 version = "0.1.0"
-source = "git+https://github.com/paritytech/grandpa-bridge-gadget?branch=master#7fa0c1c084f88b56c5b4515e8ff94d25330d2e97"
+source = "git+https://github.com/paritytech/grandpa-bridge-gadget?branch=master#846e0ef3b929d8922ddadaaea8e664754fada39a"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
@@ -4458,7 +4458,7 @@ dependencies = [
 [[package]]
 name = "pallet-beefy"
 version = "0.1.0"
-source = "git+https://github.com/paritytech/grandpa-bridge-gadget?branch=master#7fa0c1c084f88b56c5b4515e8ff94d25330d2e97"
+source = "git+https://github.com/paritytech/grandpa-bridge-gadget?branch=master#846e0ef3b929d8922ddadaaea8e664754fada39a"
 dependencies = [
  "beefy-primitives",
  "frame-support",
@@ -10550,7 +10550,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04f8ab788026715fa63b31960869617cba39117e520eb415b0139543e325ab59"
 dependencies = [
  "cfg-if 0.1.10",
- "rand 0.7.3",
+ "rand 0.3.23",
  "static_assertions",
 ]
 
diff --git a/polkadot/runtime/westend/src/lib.rs b/polkadot/runtime/westend/src/lib.rs
index d83dac3803217d992d933969add9f1f7e950197e..32af630a11219146a03f3ab369278411508dbfe2 100644
--- a/polkadot/runtime/westend/src/lib.rs
+++ b/polkadot/runtime/westend/src/lib.rs
@@ -91,6 +91,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("westend"),
 	impl_name: create_runtime_str!("parity-westend"),
 	authoring_version: 2,
+	// NOTE: see https://github.com/paritytech/polkadot/wiki/Westend
 	spec_version: 51,
 	impl_version: 0,
 	#[cfg(not(feature = "disable-runtime-api"))]
@@ -840,7 +841,7 @@ pub type Executive = frame_executive::Executive<
 	frame_system::ChainContext<Runtime>,
 	Runtime,
 	AllPallets,
-	(),
+	UpgradeSessionKeys,
 >;
 /// The payload being signed in transactions.
 pub type SignedPayload = generic::SignedPayload<Call, SignedExtra>;