diff --git a/Cargo.lock b/Cargo.lock
index 08915196d5374..9297a5540734f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3591,7 +3591,7 @@ dependencies = [
  "libp2p-request-response",
  "libp2p-swarm",
  "log",
- "prost 0.10.3",
+ "prost 0.10.4",
  "prost-build 0.10.4",
  "rand 0.8.5",
 ]
@@ -3618,7 +3618,7 @@ dependencies = [
  "multistream-select",
  "parking_lot 0.12.1",
  "pin-project",
- "prost 0.10.3",
+ "prost 0.10.4",
  "prost-build 0.10.4",
  "rand 0.8.5",
  "ring",
@@ -3669,7 +3669,7 @@ dependencies = [
  "libp2p-core",
  "libp2p-swarm",
  "log",
- "prost 0.10.3",
+ "prost 0.10.4",
  "prost-build 0.10.4",
  "rand 0.7.3",
  "smallvec",
@@ -3693,7 +3693,7 @@ dependencies = [
  "libp2p-swarm",
  "log",
  "prometheus-client",
- "prost 0.10.3",
+ "prost 0.10.4",
  "prost-build 0.10.4",
  "rand 0.7.3",
  "regex",
@@ -3716,7 +3716,7 @@ dependencies = [
  "libp2p-swarm",
  "log",
  "lru",
- "prost 0.10.3",
+ "prost 0.10.4",
  "prost-build 0.10.4",
  "prost-codec",
  "smallvec",
@@ -3741,7 +3741,7 @@ dependencies = [
  "libp2p-core",
  "libp2p-swarm",
  "log",
- "prost 0.10.3",
+ "prost 0.10.4",
  "prost-build 0.10.4",
  "rand 0.7.3",
  "sha2 0.10.2",
@@ -3819,7 +3819,7 @@ dependencies = [
  "lazy_static",
  "libp2p-core",
  "log",
- "prost 0.10.3",
+ "prost 0.10.4",
  "prost-build 0.10.4",
  "rand 0.8.5",
  "sha2 0.10.2",
@@ -3856,7 +3856,7 @@ dependencies = [
  "futures",
  "libp2p-core",
  "log",
- "prost 0.10.3",
+ "prost 0.10.4",
  "prost-build 0.10.4",
  "unsigned-varint",
  "void",
@@ -3892,7 +3892,7 @@ dependencies = [
  "libp2p-swarm",
  "log",
  "pin-project",
- "prost 0.10.3",
+ "prost 0.10.4",
  "prost-build 0.10.4",
  "prost-codec",
  "rand 0.8.5",
@@ -3916,7 +3916,7 @@ dependencies = [
  "libp2p-core",
  "libp2p-swarm",
  "log",
- "prost 0.10.3",
+ "prost 0.10.4",
  "prost-build 0.10.4",
  "rand 0.8.5",
  "sha2 0.10.2",
@@ -7056,9 +7056,9 @@ dependencies = [
 
 [[package]]
 name = "prost"
-version = "0.10.3"
+version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc03e116981ff7d8da8e5c220e374587b98d294af7ba7dd7fda761158f00086f"
+checksum = "71adf41db68aa0daaefc69bb30bcd68ded9b9abaad5d1fbb6304c4fb390e083e"
 dependencies = [
  "bytes",
  "prost-derive 0.10.1",
@@ -7089,7 +7089,7 @@ dependencies = [
  "log",
  "multimap",
  "petgraph",
- "prost 0.10.3",
+ "prost 0.10.4",
  "prost-types 0.10.1",
  "regex",
  "tempfile",
@@ -7124,7 +7124,7 @@ checksum = "00af1e92c33b4813cc79fda3f2dbf56af5169709be0202df730e9ebc3e4cd007"
 dependencies = [
  "asynchronous-codec",
  "bytes",
- "prost 0.10.3",
+ "prost 0.10.4",
  "thiserror",
  "unsigned-varint",
 ]
@@ -7162,7 +7162,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2d0a014229361011dc8e69c8a1ec6c2e8d0f2af7c91e3ea3f5b2170298461e68"
 dependencies = [
  "bytes",
- "prost 0.10.3",
+ "prost 0.10.4",
 ]
 
 [[package]]
@@ -7781,7 +7781,7 @@ dependencies = [
  "libp2p",
  "log",
  "parity-scale-codec",
- "prost 0.10.3",
+ "prost 0.11.0",
  "prost-build 0.10.4",
  "quickcheck",
  "rand 0.7.3",
@@ -8437,7 +8437,7 @@ dependencies = [
  "parity-scale-codec",
  "parking_lot 0.12.1",
  "pin-project",
- "prost 0.10.3",
+ "prost 0.11.0",
  "rand 0.7.3",
  "sc-block-builder",
  "sc-client-api",
@@ -8543,7 +8543,7 @@ dependencies = [
  "libp2p",
  "log",
  "parity-scale-codec",
- "prost 0.10.3",
+ "prost 0.11.0",
  "prost-build 0.10.4",
  "sc-client-api",
  "sc-network-common",
@@ -8565,7 +8565,7 @@ dependencies = [
  "log",
  "lru",
  "parity-scale-codec",
- "prost 0.10.3",
+ "prost 0.11.0",
  "prost-build 0.10.4",
  "quickcheck",
  "sc-block-builder",
diff --git a/client/authority-discovery/Cargo.toml b/client/authority-discovery/Cargo.toml
index d9e9df4f2a97c..1a82dd1c82248 100644
--- a/client/authority-discovery/Cargo.toml
+++ b/client/authority-discovery/Cargo.toml
@@ -23,7 +23,7 @@ futures-timer = "3.0.1"
 ip_network = "0.4.1"
 libp2p = { version = "0.46.1", default-features = false, features = ["kad"] }
 log = "0.4.17"
-prost = "0.10"
+prost = "0.11"
 rand = "0.7.2"
 thiserror = "1.0"
 prometheus-endpoint = { package = "substrate-prometheus-endpoint", version = "0.10.0-dev", path = "../../utils/prometheus" }
diff --git a/client/network/Cargo.toml b/client/network/Cargo.toml
index ae115220d6843..5524fa4ae4e94 100644
--- a/client/network/Cargo.toml
+++ b/client/network/Cargo.toml
@@ -33,7 +33,7 @@ log = "0.4.17"
 lru = "0.7.5"
 parking_lot = "0.12.1"
 pin-project = "1.0.10"
-prost = "0.10"
+prost = "0.11"
 rand = "0.7.2"
 serde = { version = "1.0.136", features = ["derive"] }
 serde_json = "1.0.85"
diff --git a/client/network/light/Cargo.toml b/client/network/light/Cargo.toml
index c1a0fb4759320..d6270ad4e38a3 100644
--- a/client/network/light/Cargo.toml
+++ b/client/network/light/Cargo.toml
@@ -24,7 +24,7 @@ futures = "0.3.21"
 hex = "0.4.0"
 libp2p = "0.46.1"
 log = "0.4.16"
-prost = "0.10"
+prost = "0.11"
 sp-blockchain = { version = "4.0.0-dev", path = "../../../primitives/blockchain" }
 sc-client-api = { version = "4.0.0-dev", path = "../../api" }
 sc-network-common = { version = "0.10.0-dev", path = "../common" }
diff --git a/client/network/sync/Cargo.toml b/client/network/sync/Cargo.toml
index 7c8f8adafd214..83238475ea6dc 100644
--- a/client/network/sync/Cargo.toml
+++ b/client/network/sync/Cargo.toml
@@ -25,7 +25,7 @@ hex = "0.4.0"
 libp2p = "0.46.1"
 log = "0.4.17"
 lru = "0.7.5"
-prost = "0.10"
+prost = "0.11"
 smallvec = "1.8.0"
 thiserror = "1.0"
 fork-tree = { version = "3.0.0", path = "../../../utils/fork-tree" }