diff --git a/Cargo.lock b/Cargo.lock
index 8f2be68445500..9eca5e5321da2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1082,7 +1082,7 @@ name = "ethereum-contract-builtin"
 version = "0.1.0"
 dependencies = [
  "bridge-node-runtime",
- "finality-grandpa",
+ "finality-grandpa 0.12.1",
  "parity-scale-codec",
  "sp-blockchain 2.0.0-alpha.5",
  "sp-finality-grandpa 2.0.0-alpha.5",
@@ -1215,6 +1215,21 @@ dependencies = [
  "parking_lot 0.9.0",
 ]
 
+[[package]]
+name = "finality-grandpa"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ab32971efbe776e46bfbc34d5b662d8e1de51fd14e26a2eba522c0f3470fc0f"
+dependencies = [
+ "either",
+ "futures 0.3.4",
+ "futures-timer 2.0.2",
+ "log 0.4.8",
+ "num-traits 0.2.11",
+ "parity-scale-codec",
+ "parking_lot 0.9.0",
+]
+
 [[package]]
 name = "fixed-hash"
 version = "0.5.2"
@@ -5139,7 +5154,7 @@ version = "0.8.0-dev"
 source = "git+https://github.com/paritytech/substrate.git?rev=c13ad41634d0bd7cf07897c2aa062b917d520520#c13ad41634d0bd7cf07897c2aa062b917d520520"
 dependencies = [
  "assert_matches",
- "finality-grandpa",
+ "finality-grandpa 0.11.2",
  "fork-tree",
  "futures 0.3.4",
  "futures-timer 3.0.2",
diff --git a/modules/ethereum-contract/builtin/Cargo.toml b/modules/ethereum-contract/builtin/Cargo.toml
index be2b1c7f68363..5ae6a5a1a277e 100644
--- a/modules/ethereum-contract/builtin/Cargo.toml
+++ b/modules/ethereum-contract/builtin/Cargo.toml
@@ -10,7 +10,7 @@ edition = "2018"
 # General dependencies
 
 codec = { package = "parity-scale-codec", version = "1.0.0" }
-finality-grandpa = { version = "0.11.2", features = ["derive-codec"] }
+finality-grandpa = { version = "0.12.1", features = ["derive-codec"] }
 sp-blockchain = "2.0.0-alpha.5"
 sp-finality-grandpa = "2.0.0-alpha.5"
 sp-runtime = "2.0.0-alpha.5"