diff --git a/polkadot/Cargo.lock b/polkadot/Cargo.lock
index 8173d5258b6a69e1390a52db309c1817bdba4bfb..938c9ae2096ce85e6ea0e3db009c74320de4d4b9 100644
--- a/polkadot/Cargo.lock
+++ b/polkadot/Cargo.lock
@@ -5544,11 +5544,11 @@ dependencies = [
 
 [[package]]
 name = "sc-consensus-babe-rpc"
-version = "0.8.0-dev"
-source = "git+https://github.com/paritytech/substrate#c0ccc24d02080ab4fbb2c65440327fc72acb6c42"
+version = "0.8.0-alpha.8"
+source = "git+https://github.com/paritytech/substrate#1291fbf5c711f6b3f26599aa771d8ad8c45efe8d"
 dependencies = [
- "derive_more 0.99.5",
- "futures 0.3.4",
+ "derive_more 0.99.6",
+ "futures 0.3.5",
  "jsonrpc-core",
  "jsonrpc-core-client",
  "jsonrpc-derive",