diff --git a/Cargo.lock b/Cargo.lock
index 7bde226f8232..c557716d58af 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1220,16 +1220,16 @@ checksum = "2fad85553e09a6f881f739c29f0b00b0f01357c743266d478b68951ce23285f3"
 
 [[package]]
 name = "fork-tree"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
 ]
 
 [[package]]
 name = "frame-benchmarking"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -1245,8 +1245,8 @@ dependencies = [
 
 [[package]]
 name = "frame-benchmarking-cli"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "parity-scale-codec",
@@ -1263,8 +1263,8 @@ dependencies = [
 
 [[package]]
 name = "frame-executive"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -1278,8 +1278,8 @@ dependencies = [
 
 [[package]]
 name = "frame-metadata"
-version = "11.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "11.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "serde",
@@ -1289,8 +1289,8 @@ dependencies = [
 
 [[package]]
 name = "frame-support"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "bitmask",
  "frame-metadata",
@@ -1313,8 +1313,8 @@ dependencies = [
 
 [[package]]
 name = "frame-support-procedural"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support-procedural-tools",
  "proc-macro2 1.0.12",
@@ -1324,8 +1324,8 @@ dependencies = [
 
 [[package]]
 name = "frame-support-procedural-tools"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support-procedural-tools-derive",
  "proc-macro-crate",
@@ -1336,8 +1336,8 @@ dependencies = [
 
 [[package]]
 name = "frame-support-procedural-tools-derive"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "proc-macro2 1.0.12",
  "quote 1.0.5",
@@ -1346,8 +1346,8 @@ dependencies = [
 
 [[package]]
 name = "frame-system"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "impl-trait-for-tuples",
@@ -1362,8 +1362,8 @@ dependencies = [
 
 [[package]]
 name = "frame-system-rpc-runtime-api"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
@@ -3263,8 +3263,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-authority-discovery"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3281,8 +3281,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-authorship"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3298,8 +3298,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-babe"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3320,8 +3320,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-balances"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3335,8 +3335,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-collective"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3351,8 +3351,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-democracy"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3366,8 +3366,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-elections-phragmen"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3381,8 +3381,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-finality-tracker"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3397,8 +3397,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-grandpa"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3417,8 +3417,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-identity"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "enumflags2",
  "frame-benchmarking",
@@ -3433,8 +3433,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-im-online"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3453,8 +3453,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-indices"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3469,8 +3469,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-membership"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3483,8 +3483,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-nicks"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3497,8 +3497,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-offences"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3512,8 +3512,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-offences-benchmarking"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3534,8 +3534,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-randomness-collective-flip"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3547,8 +3547,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-recovery"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "enumflags2",
  "frame-support",
@@ -3562,8 +3562,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-scheduler"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3577,8 +3577,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-session"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3596,8 +3596,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-session-benchmarking"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3610,8 +3610,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-society"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3625,8 +3625,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-staking"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3648,8 +3648,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-staking-reward-curve"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2 1.0.12",
@@ -3659,8 +3659,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-sudo"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3673,8 +3673,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-timestamp"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3691,8 +3691,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-transaction-payment"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3704,8 +3704,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-transaction-payment-rpc"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "jsonrpc-core",
  "jsonrpc-core-client",
@@ -3722,8 +3722,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-transaction-payment-rpc-runtime-api"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-support",
  "parity-scale-codec",
@@ -3735,8 +3735,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-treasury"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3750,8 +3750,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-utility"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3766,8 +3766,8 @@ dependencies = [
 
 [[package]]
 name = "pallet-vesting"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "enumflags2",
  "frame-benchmarking",
@@ -5308,8 +5308,8 @@ dependencies = [
 
 [[package]]
 name = "sc-authority-discovery"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "bytes 0.5.4",
  "derive_more 0.99.6",
@@ -5335,8 +5335,8 @@ dependencies = [
 
 [[package]]
 name = "sc-block-builder"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "sc-client-api",
@@ -5351,8 +5351,8 @@ dependencies = [
 
 [[package]]
 name = "sc-chain-spec"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "impl-trait-for-tuples",
  "sc-chain-spec-derive",
@@ -5367,8 +5367,8 @@ dependencies = [
 
 [[package]]
 name = "sc-chain-spec-derive"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2 1.0.12",
@@ -5378,8 +5378,8 @@ dependencies = [
 
 [[package]]
 name = "sc-cli"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "ansi_term 0.12.1",
  "app_dirs",
@@ -5420,8 +5420,8 @@ dependencies = [
 
 [[package]]
 name = "sc-client-api"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "fnv",
@@ -5456,8 +5456,8 @@ dependencies = [
 
 [[package]]
 name = "sc-client-db"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "blake2-rfc",
  "hash-db",
@@ -5485,8 +5485,8 @@ dependencies = [
 
 [[package]]
 name = "sc-consensus"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "sc-client-api",
  "sp-blockchain",
@@ -5496,8 +5496,8 @@ dependencies = [
 
 [[package]]
 name = "sc-consensus-babe"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "fork-tree",
@@ -5538,8 +5538,8 @@ dependencies = [
 
 [[package]]
 name = "sc-consensus-epochs"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "fork-tree",
  "parity-scale-codec",
@@ -5551,8 +5551,8 @@ dependencies = [
 
 [[package]]
 name = "sc-consensus-slots"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "futures 0.3.5",
  "futures-timer 3.0.2",
@@ -5573,8 +5573,8 @@ dependencies = [
 
 [[package]]
 name = "sc-consensus-uncles"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "log 0.4.8",
  "sc-client-api",
@@ -5587,8 +5587,8 @@ dependencies = [
 
 [[package]]
 name = "sc-executor"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "lazy_static",
@@ -5615,8 +5615,8 @@ dependencies = [
 
 [[package]]
 name = "sc-executor-common"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "log 0.4.8",
@@ -5632,8 +5632,8 @@ dependencies = [
 
 [[package]]
 name = "sc-executor-wasmi"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "log 0.4.8",
  "parity-scale-codec",
@@ -5647,8 +5647,8 @@ dependencies = [
 
 [[package]]
 name = "sc-executor-wasmtime"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "cranelift-codegen",
  "cranelift-wasm",
@@ -5668,8 +5668,8 @@ dependencies = [
 
 [[package]]
 name = "sc-finality-grandpa"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "assert_matches",
  "derive_more 0.99.6",
@@ -5705,8 +5705,8 @@ dependencies = [
 
 [[package]]
 name = "sc-finality-grandpa-rpc"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "finality-grandpa",
@@ -5722,8 +5722,8 @@ dependencies = [
 
 [[package]]
 name = "sc-informant"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "ansi_term 0.12.1",
  "futures 0.3.5",
@@ -5739,8 +5739,8 @@ dependencies = [
 
 [[package]]
 name = "sc-keystore"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "hex",
@@ -5754,8 +5754,8 @@ dependencies = [
 
 [[package]]
 name = "sc-network"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "bitflags",
  "bytes 0.5.4",
@@ -5805,8 +5805,8 @@ dependencies = [
 
 [[package]]
 name = "sc-network-gossip"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "futures 0.3.5",
  "futures-timer 3.0.2",
@@ -5820,8 +5820,8 @@ dependencies = [
 
 [[package]]
 name = "sc-network-test"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "env_logger",
  "futures 0.3.5",
@@ -5847,8 +5847,8 @@ dependencies = [
 
 [[package]]
 name = "sc-offchain"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "bytes 0.5.4",
  "fnv",
@@ -5874,8 +5874,8 @@ dependencies = [
 
 [[package]]
 name = "sc-peerset"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "futures 0.3.5",
  "libp2p",
@@ -5887,8 +5887,8 @@ dependencies = [
 
 [[package]]
 name = "sc-rpc"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "futures 0.3.5",
  "hash-db",
@@ -5919,8 +5919,8 @@ dependencies = [
 
 [[package]]
 name = "sc-rpc-api"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "futures 0.3.5",
@@ -5943,8 +5943,8 @@ dependencies = [
 
 [[package]]
 name = "sc-rpc-server"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "jsonrpc-core",
  "jsonrpc-http-server",
@@ -5958,8 +5958,8 @@ dependencies = [
 
 [[package]]
 name = "sc-service"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "exit-future",
@@ -6016,8 +6016,8 @@ dependencies = [
 
 [[package]]
 name = "sc-state-db"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "log 0.4.8",
  "parity-scale-codec",
@@ -6030,8 +6030,8 @@ dependencies = [
 
 [[package]]
 name = "sc-telemetry"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "bytes 0.5.4",
  "futures 0.3.5",
@@ -6052,8 +6052,8 @@ dependencies = [
 
 [[package]]
 name = "sc-tracing"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "erased-serde",
  "log 0.4.8",
@@ -6067,8 +6067,8 @@ dependencies = [
 
 [[package]]
 name = "sc-transaction-graph"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "futures 0.3.5",
@@ -6087,8 +6087,8 @@ dependencies = [
 
 [[package]]
 name = "sc-transaction-pool"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "futures 0.3.5",
@@ -6472,8 +6472,8 @@ dependencies = [
 
 [[package]]
 name = "sp-allocator"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "log 0.4.8",
@@ -6484,8 +6484,8 @@ dependencies = [
 
 [[package]]
 name = "sp-api"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "hash-db",
  "parity-scale-codec",
@@ -6499,8 +6499,8 @@ dependencies = [
 
 [[package]]
 name = "sp-api-proc-macro"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "blake2-rfc",
  "proc-macro-crate",
@@ -6511,8 +6511,8 @@ dependencies = [
 
 [[package]]
 name = "sp-application-crypto"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "serde",
@@ -6523,8 +6523,8 @@ dependencies = [
 
 [[package]]
 name = "sp-arithmetic"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "integer-sqrt",
  "num-traits 0.2.11",
@@ -6537,8 +6537,8 @@ dependencies = [
 
 [[package]]
 name = "sp-authority-discovery"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
@@ -6549,8 +6549,8 @@ dependencies = [
 
 [[package]]
 name = "sp-authorship"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "sp-inherents",
@@ -6560,8 +6560,8 @@ dependencies = [
 
 [[package]]
 name = "sp-block-builder"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
@@ -6572,8 +6572,8 @@ dependencies = [
 
 [[package]]
 name = "sp-blockchain"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "log 0.4.8",
@@ -6588,8 +6588,8 @@ dependencies = [
 
 [[package]]
 name = "sp-chain-spec"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "serde",
  "serde_json",
@@ -6597,8 +6597,8 @@ dependencies = [
 
 [[package]]
 name = "sp-consensus"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "futures 0.3.5",
@@ -6620,8 +6620,8 @@ dependencies = [
 
 [[package]]
 name = "sp-consensus-aura"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
@@ -6634,8 +6634,8 @@ dependencies = [
 
 [[package]]
 name = "sp-consensus-babe"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "merlin",
  "parity-scale-codec",
@@ -6651,8 +6651,8 @@ dependencies = [
 
 [[package]]
 name = "sp-consensus-vrf"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "schnorrkel",
@@ -6663,8 +6663,8 @@ dependencies = [
 
 [[package]]
 name = "sp-core"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "base58",
  "blake2-rfc",
@@ -6705,8 +6705,8 @@ dependencies = [
 
 [[package]]
 name = "sp-database"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "kvdb",
  "parking_lot 0.10.2",
@@ -6714,8 +6714,8 @@ dependencies = [
 
 [[package]]
 name = "sp-debug-derive"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "proc-macro2 1.0.12",
  "quote 1.0.5",
@@ -6724,8 +6724,8 @@ dependencies = [
 
 [[package]]
 name = "sp-externalities"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "environmental",
  "parity-scale-codec",
@@ -6735,8 +6735,8 @@ dependencies = [
 
 [[package]]
 name = "sp-finality-grandpa"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "finality-grandpa",
  "log 0.4.8",
@@ -6751,8 +6751,8 @@ dependencies = [
 
 [[package]]
 name = "sp-finality-tracker"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "sp-inherents",
@@ -6761,8 +6761,8 @@ dependencies = [
 
 [[package]]
 name = "sp-inherents"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "parity-scale-codec",
@@ -6773,8 +6773,8 @@ dependencies = [
 
 [[package]]
 name = "sp-io"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "futures 0.3.5",
  "hash-db",
@@ -6793,8 +6793,8 @@ dependencies = [
 
 [[package]]
 name = "sp-keyring"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "lazy_static",
  "sp-core",
@@ -6804,8 +6804,8 @@ dependencies = [
 
 [[package]]
 name = "sp-offchain"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "sp-api",
  "sp-core",
@@ -6814,8 +6814,8 @@ dependencies = [
 
 [[package]]
 name = "sp-panic-handler"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "backtrace",
  "log 0.4.8",
@@ -6823,8 +6823,8 @@ dependencies = [
 
 [[package]]
 name = "sp-phragmen"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "serde",
@@ -6835,8 +6835,8 @@ dependencies = [
 
 [[package]]
 name = "sp-phragmen-compact"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2 1.0.12",
@@ -6846,8 +6846,8 @@ dependencies = [
 
 [[package]]
 name = "sp-rpc"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "serde",
  "sp-core",
@@ -6855,8 +6855,8 @@ dependencies = [
 
 [[package]]
 name = "sp-runtime"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "hash256-std-hasher",
  "impl-trait-for-tuples",
@@ -6876,8 +6876,8 @@ dependencies = [
 
 [[package]]
 name = "sp-runtime-interface"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "primitive-types",
@@ -6891,8 +6891,8 @@ dependencies = [
 
 [[package]]
 name = "sp-runtime-interface-proc-macro"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "Inflector",
  "proc-macro-crate",
@@ -6903,8 +6903,8 @@ dependencies = [
 
 [[package]]
 name = "sp-serializer"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "serde",
  "serde_json",
@@ -6912,8 +6912,8 @@ dependencies = [
 
 [[package]]
 name = "sp-session"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
@@ -6925,8 +6925,8 @@ dependencies = [
 
 [[package]]
 name = "sp-staking"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "parity-scale-codec",
  "sp-runtime",
@@ -6935,8 +6935,8 @@ dependencies = [
 
 [[package]]
 name = "sp-state-machine"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "hash-db",
  "log 0.4.8",
@@ -6954,13 +6954,13 @@ dependencies = [
 
 [[package]]
 name = "sp-std"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 
 [[package]]
 name = "sp-storage"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "impl-serde 0.2.3",
  "ref-cast",
@@ -6971,8 +6971,8 @@ dependencies = [
 
 [[package]]
 name = "sp-timestamp"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "impl-trait-for-tuples",
  "parity-scale-codec",
@@ -6985,16 +6985,16 @@ dependencies = [
 
 [[package]]
 name = "sp-tracing"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "tracing",
 ]
 
 [[package]]
 name = "sp-transaction-pool"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "derive_more 0.99.6",
  "futures 0.3.5",
@@ -7008,8 +7008,8 @@ dependencies = [
 
 [[package]]
 name = "sp-trie"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "hash-db",
  "memory-db",
@@ -7022,8 +7022,8 @@ dependencies = [
 
 [[package]]
 name = "sp-utils"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "futures 0.3.5",
  "futures-core",
@@ -7033,8 +7033,8 @@ dependencies = [
 
 [[package]]
 name = "sp-version"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "impl-serde 0.2.3",
  "parity-scale-codec",
@@ -7045,8 +7045,8 @@ dependencies = [
 
 [[package]]
 name = "sp-wasm-interface"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "impl-trait-for-tuples",
  "parity-scale-codec",
@@ -7173,8 +7173,8 @@ dependencies = [
 
 [[package]]
 name = "substrate-browser-utils"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "chrono",
  "clear_on_drop",
@@ -7200,16 +7200,16 @@ dependencies = [
 
 [[package]]
 name = "substrate-build-script-utils"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "platforms",
 ]
 
 [[package]]
 name = "substrate-frame-rpc-system"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "frame-system-rpc-runtime-api",
  "futures 0.3.5",
@@ -7229,8 +7229,8 @@ dependencies = [
 
 [[package]]
 name = "substrate-prometheus-endpoint"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "async-std",
  "derive_more 0.99.6",
@@ -7243,8 +7243,8 @@ dependencies = [
 
 [[package]]
 name = "substrate-test-client"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "futures 0.3.5",
  "hash-db",
@@ -7264,8 +7264,8 @@ dependencies = [
 
 [[package]]
 name = "substrate-test-runtime"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "cfg-if",
  "frame-executive",
@@ -7304,8 +7304,8 @@ dependencies = [
 
 [[package]]
 name = "substrate-test-runtime-client"
-version = "2.0.0-dev"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+version = "2.0.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
  "futures 0.3.5",
  "parity-scale-codec",
@@ -7325,7 +7325,7 @@ dependencies = [
 [[package]]
 name = "substrate-wasm-builder-runner"
 version = "1.0.6"
-source = "git+https://github.com/paritytech/substrate#3f71d1ea54a653f78c2f6e1186204fb33f907520"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 
 [[package]]
 name = "substrate-wasm-builder-runner"
diff --git a/network/test/src/lib.rs b/network/test/src/lib.rs
index 733ece5fc97f..c48bfabdfbaa 100644
--- a/network/test/src/lib.rs
+++ b/network/test/src/lib.rs
@@ -258,10 +258,10 @@ impl<D> Peer<D> {
 				Default::default()
 			};
 			self.block_import.import_block(import_block, cache).expect("block_import failed");
-			self.network.on_block_imported(header, true);
 			at = hash;
 		}
 
+		self.network.update_chain();
 		self.network.service().announce_block(at.clone(), Vec::new());
 		at
 	}
@@ -770,10 +770,7 @@ pub trait TestNetFactory: Sized {
 
 				// We poll `imported_blocks_stream`.
 				while let Poll::Ready(Some(notification)) = peer.imported_blocks_stream.as_mut().poll_next(cx) {
-					peer.network.on_block_imported(
-						notification.header,
-						true,
-					);
+					peer.network.service().announce_block(notification.hash, Vec::new());
 				}
 
 				// We poll `finality_notification_stream`, but we only take the last event.