diff --git a/Cargo.lock b/Cargo.lock
index 7754e0ae6b62f..d3cbf99ababa0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -8546,9 +8546,9 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.126"
+version = "1.0.136"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec7505abeacaec74ae4778d9d9328fe5a5d04253220a85c4ee022239fc996d03"
+checksum = "ce31e24b01e1e524df96f1c2fdd054405f8d7376249a5110886fb4b658484789"
 dependencies = [
  "serde_derive",
 ]
@@ -8574,9 +8574,9 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.126"
+version = "1.0.136"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "963a7dbc9895aeac7ac90e74f34a5d5261828f79df35cbed41e10189d3804d43"
+checksum = "08597e7152fcd306f41838ed3e37be9eaeed2b61c42e2117266a554fab4662f9"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/bin/node/bench/Cargo.toml b/bin/node/bench/Cargo.toml
index b19a71966fb87..984ea59175475 100644
--- a/bin/node/bench/Cargo.toml
+++ b/bin/node/bench/Cargo.toml
@@ -16,7 +16,7 @@ node-runtime = { version = "3.0.0-dev", path = "../runtime" }
 sc-client-api = { version = "4.0.0-dev", path = "../../../client/api/" }
 sp-runtime = { version = "4.0.0-dev", path = "../../../primitives/runtime" }
 sp-state-machine = { version = "0.10.0-dev", path = "../../../primitives/state-machine" }
-serde = "1.0.126"
+serde = "1.0.136"
 serde_json = "1.0.68"
 structopt = "0.3"
 derive_more = "0.99.2"
diff --git a/bin/node/cli/Cargo.toml b/bin/node/cli/Cargo.toml
index 6a12af4b278b7..5546dff407343 100644
--- a/bin/node/cli/Cargo.toml
+++ b/bin/node/cli/Cargo.toml
@@ -35,7 +35,7 @@ crate-type = ["cdylib", "rlib"]
 [dependencies]
 # third-party dependencies
 codec = { package = "parity-scale-codec", version = "2.0.0" }
-serde = { version = "1.0.126", features = ["derive"] }
+serde = { version = "1.0.136", features = ["derive"] }
 futures = "0.3.16"
 hex-literal = "0.3.1"
 log = "0.4.8"
diff --git a/client/chain-spec/Cargo.toml b/client/chain-spec/Cargo.toml
index 8af2996e968d8..9d120b1be773e 100644
--- a/client/chain-spec/Cargo.toml
+++ b/client/chain-spec/Cargo.toml
@@ -17,7 +17,7 @@ sc-chain-spec-derive = { version = "4.0.0-dev", path = "./derive" }
 impl-trait-for-tuples = "0.2.1"
 sc-network = { version = "0.10.0-dev", path = "../network" }
 sp-core = { version = "4.0.0-dev", path = "../../primitives/core" }
-serde = { version = "1.0.126", features = ["derive"] }
+serde = { version = "1.0.136", features = ["derive"] }
 serde_json = "1.0.68"
 sp-runtime = { version = "4.0.0-dev", path = "../../primitives/runtime" }
 sc-telemetry = { version = "4.0.0-dev", path = "../telemetry" }
diff --git a/client/cli/Cargo.toml b/client/cli/Cargo.toml
index e7a0330e76e0c..9423ee7f6ff4a 100644
--- a/client/cli/Cargo.toml
+++ b/client/cli/Cargo.toml
@@ -41,7 +41,7 @@ names = { version = "0.12.0", default-features = false }
 structopt = "0.3.8"
 sc-tracing = { version = "4.0.0-dev", path = "../tracing" }
 chrono = "0.4.10"
-serde = "1.0.126"
+serde = "1.0.136"
 thiserror = "1.0.21"
 rpassword = "5.0.0"
 
diff --git a/client/consensus/babe/Cargo.toml b/client/consensus/babe/Cargo.toml
index 65dfc57133206..61802b315b13b 100644
--- a/client/consensus/babe/Cargo.toml
+++ b/client/consensus/babe/Cargo.toml
@@ -25,7 +25,7 @@ sp-keystore = { version = "0.10.0-dev", path = "../../../primitives/keystore" }
 num-bigint = "0.2.3"
 num-rational = "0.2.2"
 num-traits = "0.2.8"
-serde = { version = "1.0.126", features = ["derive"] }
+serde = { version = "1.0.136", features = ["derive"] }
 sp-version = { version = "4.0.0-dev", path = "../../../primitives/version" }
 sp-io = { version = "4.0.0-dev", path = "../../../primitives/io" }
 sp-inherents = { version = "4.0.0-dev", path = "../../../primitives/inherents" }
diff --git a/client/consensus/babe/rpc/Cargo.toml b/client/consensus/babe/rpc/Cargo.toml
index 8d5625705a48c..6a9ab3bd0ea65 100644
--- a/client/consensus/babe/rpc/Cargo.toml
+++ b/client/consensus/babe/rpc/Cargo.toml
@@ -19,7 +19,7 @@ jsonrpc-core = "18.0.0"
 jsonrpc-core-client = "18.0.0"
 jsonrpc-derive = "18.0.0"
 sp-consensus-babe = { version = "0.10.0-dev", path = "../../../../primitives/consensus/babe" }
-serde = { version = "1.0.126", features=["derive"] }
+serde = { version = "1.0.136", features=["derive"] }
 sp-blockchain = { version = "4.0.0-dev", path = "../../../../primitives/blockchain" }
 sp-runtime = { version = "4.0.0-dev", path = "../../../../primitives/runtime" }
 sc-consensus-epochs = { version = "0.10.0-dev", path = "../../epochs" }
diff --git a/client/network/Cargo.toml b/client/network/Cargo.toml
index 873c2a847a29a..8f99bee0a1864 100644
--- a/client/network/Cargo.toml
+++ b/client/network/Cargo.toml
@@ -46,7 +46,7 @@ rand = "0.7.2"
 sc-block-builder = { version = "0.10.0-dev", path = "../block-builder" }
 sc-client-api = { version = "4.0.0-dev", path = "../api" }
 sc-peerset = { version = "4.0.0-dev", path = "../peerset" }
-serde = { version = "1.0.126", features = ["derive"] }
+serde = { version = "1.0.136", features = ["derive"] }
 serde_json = "1.0.68"
 smallvec = "1.5.0"
 sp-arithmetic = { version = "4.0.0-dev", path = "../../primitives/arithmetic" }
diff --git a/client/rpc-api/Cargo.toml b/client/rpc-api/Cargo.toml
index 6342abb1a3c41..18fa67150369c 100644
--- a/client/rpc-api/Cargo.toml
+++ b/client/rpc-api/Cargo.toml
@@ -27,7 +27,7 @@ sp-core = { version = "4.0.0-dev", path = "../../primitives/core" }
 sp-version = { version = "4.0.0-dev", path = "../../primitives/version" }
 sp-runtime = { path = "../../primitives/runtime", version = "4.0.0-dev" }
 sc-chain-spec = { path = "../chain-spec", version = "4.0.0-dev" }
-serde = { version = "1.0.126", features = ["derive"] }
+serde = { version = "1.0.136", features = ["derive"] }
 serde_json = "1.0.68"
 sc-transaction-pool-api = { version = "4.0.0-dev", path = "../transaction-pool/api" }
 sp-rpc = { version = "4.0.0-dev", path = "../../primitives/rpc" }
diff --git a/client/service/Cargo.toml b/client/service/Cargo.toml
index 5120cc8f4dfaa..aa67135518a1c 100644
--- a/client/service/Cargo.toml
+++ b/client/service/Cargo.toml
@@ -33,7 +33,7 @@ futures-timer = "3.0.1"
 exit-future = "0.2.0"
 pin-project = "1.0.4"
 hash-db = "0.15.2"
-serde = "1.0.126"
+serde = "1.0.136"
 serde_json = "1.0.68"
 sc-keystore = { version = "4.0.0-dev", path = "../keystore" }
 sp-runtime = { version = "4.0.0-dev", path = "../../primitives/runtime" }
diff --git a/client/sync-state-rpc/Cargo.toml b/client/sync-state-rpc/Cargo.toml
index b81fd1fd5c611..35fd1f3f27015 100644
--- a/client/sync-state-rpc/Cargo.toml
+++ b/client/sync-state-rpc/Cargo.toml
@@ -24,7 +24,7 @@ sc-consensus-epochs = { version = "0.10.0-dev", path = "../consensus/epochs" }
 sc-finality-grandpa = { version = "0.10.0-dev", path = "../finality-grandpa" }
 sc-rpc-api = { version = "0.10.0-dev", path = "../rpc-api" }
 serde_json = "1.0.68"
-serde = { version = "1.0.126", features = ["derive"] }
+serde = { version = "1.0.136", features = ["derive"] }
 sp-blockchain = { version = "4.0.0-dev", path = "../../primitives/blockchain" }
 sp-runtime = { version = "4.0.0-dev", path = "../../primitives/runtime" }
 codec = { package = "parity-scale-codec", version = "2.0.0" }
diff --git a/client/telemetry/Cargo.toml b/client/telemetry/Cargo.toml
index f115017f09701..bfc4b679da6a2 100644
--- a/client/telemetry/Cargo.toml
+++ b/client/telemetry/Cargo.toml
@@ -22,7 +22,7 @@ libp2p = { version = "0.39.1", default-features = false, features = ["dns-async-
 log = "0.4.8"
 pin-project = "1.0.4"
 rand = "0.7.2"
-serde = { version = "1.0.126", features = ["derive"] }
+serde = { version = "1.0.136", features = ["derive"] }
 serde_json = "1.0.68"
 chrono = "0.4.19"
 thiserror = "1.0.21"
diff --git a/client/tracing/Cargo.toml b/client/tracing/Cargo.toml
index 3e314a82aa583..ee7ec26524b9a 100644
--- a/client/tracing/Cargo.toml
+++ b/client/tracing/Cargo.toml
@@ -21,7 +21,7 @@ once_cell = "1.4.1"
 parking_lot = "0.11.1"
 regex = "1.4.2"
 rustc-hash = "1.1.0"
-serde = "1.0.126"
+serde = "1.0.136"
 thiserror = "1.0.21"
 tracing = "0.1.25"
 tracing-log = "0.1.2"
diff --git a/client/transaction-pool/Cargo.toml b/client/transaction-pool/Cargo.toml
index 2184af819adf7..e732079f67c4a 100644
--- a/client/transaction-pool/Cargo.toml
+++ b/client/transaction-pool/Cargo.toml
@@ -30,7 +30,7 @@ sp-transaction-pool = { version = "4.0.0-dev", path = "../../primitives/transact
 sc-transaction-pool-api = { version = "4.0.0-dev", path = "./api" }
 sp-blockchain = { version = "4.0.0-dev", path = "../../primitives/blockchain" }
 sc-utils = { version = "4.0.0-dev", path = "../utils" }
-serde = { version = "1.0.126", features = ["derive"] }
+serde = { version = "1.0.136", features = ["derive"] }
 linked-hash-map = "0.5.4"
 retain_mut = "0.1.3"
 
diff --git a/client/transaction-pool/api/Cargo.toml b/client/transaction-pool/api/Cargo.toml
index efef36071f083..5962b461d2691 100644
--- a/client/transaction-pool/api/Cargo.toml
+++ b/client/transaction-pool/api/Cargo.toml
@@ -11,7 +11,7 @@ description = "Transaction pool client facing API."
 [dependencies]
 futures = { version = "0.3.1"  }
 log = { version = "0.4.8" }
-serde = { version = "1.0.126", features = ["derive"] }
+serde = { version = "1.0.136", features = ["derive"] }
 thiserror = { version = "1.0.21" }
 sp-runtime = { version = "4.0.0-dev", default-features = false, path = "../../../primitives/runtime" }
 
diff --git a/frame/democracy/Cargo.toml b/frame/democracy/Cargo.toml
index 94719553e28aa..b8be7b95e67f3 100644
--- a/frame/democracy/Cargo.toml
+++ b/frame/democracy/Cargo.toml
@@ -13,7 +13,7 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = [
 	"derive",
 ] }
diff --git a/frame/merkle-mountain-range/primitives/Cargo.toml b/frame/merkle-mountain-range/primitives/Cargo.toml
index 07b2f8ae3a3a4..6196c3a7ebeca 100644
--- a/frame/merkle-mountain-range/primitives/Cargo.toml
+++ b/frame/merkle-mountain-range/primitives/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false }
 log = { version = "0.4.14", default-features = false }
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 
 sp-api = { version = "4.0.0-dev", default-features = false, path = "../../../primitives/api" }
 sp-core = { version = "4.0.0-dev", default-features = false, path = "../../../primitives/core" }
diff --git a/frame/merkle-mountain-range/rpc/Cargo.toml b/frame/merkle-mountain-range/rpc/Cargo.toml
index 5a0f114e50173..88ed364a54a9e 100644
--- a/frame/merkle-mountain-range/rpc/Cargo.toml
+++ b/frame/merkle-mountain-range/rpc/Cargo.toml
@@ -17,7 +17,7 @@ codec = { package = "parity-scale-codec", version = "2.0.0" }
 jsonrpc-core = "18.0.0"
 jsonrpc-core-client = "18.0.0"
 jsonrpc-derive = "18.0.0"
-serde = { version = "1.0.126", features = ["derive"] }
+serde = { version = "1.0.136", features = ["derive"] }
 
 sp-api = { version = "4.0.0-dev", path = "../../../primitives/api" }
 sp-blockchain = { version = "4.0.0-dev", path = "../../../primitives/blockchain" }
diff --git a/frame/offences/Cargo.toml b/frame/offences/Cargo.toml
index 8fdcbf46fa3e1..c2c27b39380de 100644
--- a/frame/offences/Cargo.toml
+++ b/frame/offences/Cargo.toml
@@ -17,7 +17,7 @@ pallet-balances = { version = "4.0.0-dev", default-features = false, path = "../
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
 sp-std = { version = "4.0.0-dev", default-features = false, path = "../../primitives/std" }
-serde = { version = "1.0.126", optional = true }
+serde = { version = "1.0.136", optional = true }
 sp-runtime = { version = "4.0.0-dev", default-features = false, path = "../../primitives/runtime" }
 sp-staking = { version = "4.0.0-dev", default-features = false, path = "../../primitives/staking" }
 frame-support = { version = "4.0.0-dev", default-features = false, path = "../support" }
diff --git a/frame/staking/Cargo.toml b/frame/staking/Cargo.toml
index aba19ba56357a..7df1fd195fefe 100644
--- a/frame/staking/Cargo.toml
+++ b/frame/staking/Cargo.toml
@@ -13,7 +13,7 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-serde = { version = "1.0.126", optional = true }
+serde = { version = "1.0.136", optional = true }
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = [
 	"derive",
 ] }
diff --git a/frame/support/Cargo.toml b/frame/support/Cargo.toml
index b09ed65a114dc..657171d68cc22 100644
--- a/frame/support/Cargo.toml
+++ b/frame/support/Cargo.toml
@@ -13,7 +13,7 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 codec = { package = "parity-scale-codec", version = "2.2.0", default-features = false, features = ["derive", "max-encoded-len"] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
 frame-metadata = { version = "14.0.0", default-features = false, features = ["v14"] }
diff --git a/frame/support/test/Cargo.toml b/frame/support/test/Cargo.toml
index e12880871e5c2..61e28e641386c 100644
--- a/frame/support/test/Cargo.toml
+++ b/frame/support/test/Cargo.toml
@@ -12,7 +12,7 @@ repository = "https://github.com/paritytech/substrate/"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-serde = { version = "1.0.126", default-features = false, features = ["derive"] }
+serde = { version = "1.0.136", default-features = false, features = ["derive"] }
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
 sp-arithmetic = { version = "4.0.0-dev", default-features = false, path = "../../../primitives/arithmetic" }
diff --git a/frame/system/Cargo.toml b/frame/system/Cargo.toml
index 389730107b439..52b61f1dcf562 100644
--- a/frame/system/Cargo.toml
+++ b/frame/system/Cargo.toml
@@ -13,7 +13,7 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
 sp-core = { version = "4.0.0-dev", default-features = false, path = "../../primitives/core" }
diff --git a/frame/tips/Cargo.toml b/frame/tips/Cargo.toml
index 8ca395e1c5416..ce8683fa7fb95 100644
--- a/frame/tips/Cargo.toml
+++ b/frame/tips/Cargo.toml
@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
 log = { version = "0.4.0", default-features = false }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
-serde = { version = "1.0.126", features = ["derive"], optional = true }
+serde = { version = "1.0.136", features = ["derive"], optional = true }
 
 sp-core = { version = "4.0.0-dev", default-features = false, path = "../../primitives/core" }
 sp-io = { version = "4.0.0-dev", default-features = false, path = "../../primitives/io" }
diff --git a/frame/transaction-payment/Cargo.toml b/frame/transaction-payment/Cargo.toml
index 546939692bbaf..49266f2576e32 100644
--- a/frame/transaction-payment/Cargo.toml
+++ b/frame/transaction-payment/Cargo.toml
@@ -17,7 +17,7 @@ codec = { package = "parity-scale-codec", version = "2.0.0", default-features =
 	"derive",
 ] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
-serde = { version = "1.0.126", optional = true }
+serde = { version = "1.0.136", optional = true }
 smallvec = "1.4.1"
 
 sp-core = { version = "4.0.0-dev", path = "../../primitives/core", default-features = false }
diff --git a/frame/transaction-storage/Cargo.toml b/frame/transaction-storage/Cargo.toml
index a4ebd5cfbc876..f11b8bb46f220 100644
--- a/frame/transaction-storage/Cargo.toml
+++ b/frame/transaction-storage/Cargo.toml
@@ -13,7 +13,7 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-serde = { version = "1.0.126", optional = true }
+serde = { version = "1.0.136", optional = true }
 hex-literal = { version = "0.3.1", optional = true }
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
diff --git a/frame/treasury/Cargo.toml b/frame/treasury/Cargo.toml
index b2991f3febcad..7bff76a0e8ced 100644
--- a/frame/treasury/Cargo.toml
+++ b/frame/treasury/Cargo.toml
@@ -18,7 +18,7 @@ codec = { package = "parity-scale-codec", version = "2.2.0", default-features =
 	"max-encoded-len",
 ] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
-serde = { version = "1.0.126", features = ["derive"], optional = true }
+serde = { version = "1.0.136", features = ["derive"], optional = true }
 impl-trait-for-tuples = "0.2.1"
 
 sp-std = { version = "4.0.0-dev", default-features = false, path = "../../primitives/std" }
diff --git a/primitives/application-crypto/Cargo.toml b/primitives/application-crypto/Cargo.toml
index 6849dc25f8561..292cff2717ec5 100644
--- a/primitives/application-crypto/Cargo.toml
+++ b/primitives/application-crypto/Cargo.toml
@@ -18,7 +18,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 sp-core = { version = "4.0.0-dev", default-features = false, path = "../core" }
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 sp-std = { version = "4.0.0-dev", default-features = false, path = "../std" }
 sp-io = { version = "4.0.0-dev", default-features = false, path = "../io" }
 
diff --git a/primitives/arithmetic/Cargo.toml b/primitives/arithmetic/Cargo.toml
index abdbd4e60d041..4b07e4eb096c9 100644
--- a/primitives/arithmetic/Cargo.toml
+++ b/primitives/arithmetic/Cargo.toml
@@ -23,7 +23,7 @@ integer-sqrt = "0.1.2"
 static_assertions = "1.1.0"
 num-traits = { version = "0.2.8", default-features = false }
 sp-std = { version = "4.0.0-dev", default-features = false, path = "../std" }
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 sp-debug-derive = { version = "3.0.0", default-features = false, path = "../debug-derive" }
 
 [dev-dependencies]
diff --git a/primitives/consensus/babe/Cargo.toml b/primitives/consensus/babe/Cargo.toml
index 5f6bfec219739..487527af82d45 100644
--- a/primitives/consensus/babe/Cargo.toml
+++ b/primitives/consensus/babe/Cargo.toml
@@ -27,7 +27,7 @@ sp-inherents = { version = "4.0.0-dev", default-features = false, path = "../../
 sp-keystore = { version = "0.10.0-dev", default-features = false, path = "../../keystore", optional = true }
 sp-runtime = { version = "4.0.0-dev", default-features = false, path = "../../runtime" }
 sp-timestamp = { version = "4.0.0-dev", path = "../../timestamp", optional = true }
-serde = { version = "1.0.126", features = ["derive"], optional = true }
+serde = { version = "1.0.136", features = ["derive"], optional = true }
 async-trait = { version = "0.1.50", optional = true }
 
 [features]
diff --git a/primitives/core/Cargo.toml b/primitives/core/Cargo.toml
index 73c3d454ed584..ff4006c25a863 100644
--- a/primitives/core/Cargo.toml
+++ b/primitives/core/Cargo.toml
@@ -20,7 +20,7 @@ codec = { package = "parity-scale-codec", version = "2.2.0", default-features =
 ] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
 log = { version = "0.4.11", default-features = false }
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 byteorder = { version = "1.3.2", default-features = false }
 primitive-types = { version = "0.10.1", default-features = false, features = [
 	"codec",
diff --git a/primitives/finality-grandpa/Cargo.toml b/primitives/finality-grandpa/Cargo.toml
index c0c2a654270f7..8a1b8d131b71c 100644
--- a/primitives/finality-grandpa/Cargo.toml
+++ b/primitives/finality-grandpa/Cargo.toml
@@ -19,7 +19,7 @@ codec = { package = "parity-scale-codec", version = "2.0.0", default-features =
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
 grandpa = { package = "finality-grandpa", version = "0.14.1", default-features = false, features = ["derive-codec"] }
 log = { version = "0.4.8", optional = true }
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 sp-api = { version = "4.0.0-dev", default-features = false, path = "../api" }
 sp-application-crypto = { version = "4.0.0-dev", default-features = false, path = "../application-crypto" }
 sp-core = { version = "4.0.0-dev", default-features = false, path = "../core" }
diff --git a/primitives/npos-elections/Cargo.toml b/primitives/npos-elections/Cargo.toml
index b277df8f58f12..9bb24c02c430d 100644
--- a/primitives/npos-elections/Cargo.toml
+++ b/primitives/npos-elections/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 sp-std = { version = "4.0.0-dev", default-features = false, path = "../std" }
 sp-npos-elections-solution-type = { version = "4.0.0-dev", path = "./solution-type" }
 sp-arithmetic = { version = "4.0.0-dev", default-features = false, path = "../arithmetic" }
diff --git a/primitives/rpc/Cargo.toml b/primitives/rpc/Cargo.toml
index 8e1b91a9acb21..c3342d409543e 100644
--- a/primitives/rpc/Cargo.toml
+++ b/primitives/rpc/Cargo.toml
@@ -13,7 +13,7 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-serde = { version = "1.0.126", features = ["derive"] }
+serde = { version = "1.0.136", features = ["derive"] }
 sp-core = { version = "4.0.0-dev", path = "../core" }
 rustc-hash = "1.1.0"
 
diff --git a/primitives/runtime/Cargo.toml b/primitives/runtime/Cargo.toml
index 5ac5bcf1963e0..5193da2e789fa 100644
--- a/primitives/runtime/Cargo.toml
+++ b/primitives/runtime/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 
 [dependencies]
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 codec = { package = "parity-scale-codec", version = "2.2.0", default-features = false, features = ["derive", "max-encoded-len"] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
 sp-core = { version = "4.0.0-dev", default-features = false, path = "../core" }
diff --git a/primitives/serializer/Cargo.toml b/primitives/serializer/Cargo.toml
index 2200274e0628d..577396e82e53e 100644
--- a/primitives/serializer/Cargo.toml
+++ b/primitives/serializer/Cargo.toml
@@ -14,5 +14,5 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-serde = "1.0.126"
+serde = "1.0.136"
 serde_json = "1.0.68"
diff --git a/primitives/storage/Cargo.toml b/primitives/storage/Cargo.toml
index 1a05fb9969197..2d5701583adf1 100644
--- a/primitives/storage/Cargo.toml
+++ b/primitives/storage/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 sp-std = { version = "4.0.0-dev", default-features = false, path = "../std" }
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 impl-serde = { version = "0.3.1", optional = true }
 ref-cast = "1.0.0"
 sp-debug-derive = { version = "3.0.0", path = "../debug-derive" }
diff --git a/primitives/test-primitives/Cargo.toml b/primitives/test-primitives/Cargo.toml
index 5aed5d679dd49..32377b809cb02 100644
--- a/primitives/test-primitives/Cargo.toml
+++ b/primitives/test-primitives/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 sp-application-crypto = { version = "4.0.0-dev", default-features = false, path = "../application-crypto" }
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
 sp-core = { version = "4.0.0-dev", default-features = false, path = "../core" }
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 sp-runtime = { version = "4.0.0-dev", default-features = false, path = "../runtime" }
 parity-util-mem = { version = "0.10.0", default-features = false, features = ["primitive-types"] }
 
diff --git a/primitives/tracing/Cargo.toml b/primitives/tracing/Cargo.toml
index 3be09dcd576df..4696acf38ce59 100644
--- a/primitives/tracing/Cargo.toml
+++ b/primitives/tracing/Cargo.toml
@@ -30,7 +30,7 @@ tracing-subscriber = { version = "0.2.19", optional = true, features = [
 ] }
 parking_lot = { version = "0.10.0", optional = true }
 erased-serde = { version = "0.3.9", optional = true }
-serde = { version = "1.0.126", optional = true }
+serde = { version = "1.0.136", optional = true }
 serde_json = { version = "1.0.68", optional = true }
 slog = { version = "2.5.2", features = ["nested-values"], optional = true }
 
diff --git a/primitives/version/Cargo.toml b/primitives/version/Cargo.toml
index fcab1eeabcaf4..4d06bf6aff461 100644
--- a/primitives/version/Cargo.toml
+++ b/primitives/version/Cargo.toml
@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 impl-serde = { version = "0.3.1", optional = true }
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
 scale-info = { version = "1.0", default-features = false, features = ["derive"] }
 sp-std = { version = "4.0.0-dev", default-features = false, path = "../std" }
diff --git a/test-utils/client/Cargo.toml b/test-utils/client/Cargo.toml
index 34238872cad84..61bce88f39ad8 100644
--- a/test-utils/client/Cargo.toml
+++ b/test-utils/client/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 codec = { package = "parity-scale-codec", version = "2.0.0" }
 futures = "0.3.16"
 hex = "0.4"
-serde = "1.0.126"
+serde = "1.0.136"
 serde_json = "1.0.68"
 sc-client-api = { version = "4.0.0-dev", path = "../../client/api" }
 sc-client-db = { version = "0.10.0-dev", features = [
diff --git a/test-utils/runtime/Cargo.toml b/test-utils/runtime/Cargo.toml
index 24f4d404c18bd..490b0813d3cc7 100644
--- a/test-utils/runtime/Cargo.toml
+++ b/test-utils/runtime/Cargo.toml
@@ -48,7 +48,7 @@ sp-externalities = { version = "0.10.0-dev", default-features = false, path = ".
 # 3rd party
 cfg-if = "1.0"
 log = { version = "0.4.14", default-features = false }
-serde = { version = "1.0.126", optional = true, features = ["derive"] }
+serde = { version = "1.0.136", optional = true, features = ["derive"] }
 
 [dev-dependencies]
 sc-block-builder = { version = "0.10.0-dev", path = "../../client/block-builder" }
diff --git a/utils/frame/benchmarking-cli/Cargo.toml b/utils/frame/benchmarking-cli/Cargo.toml
index 93616b590f61e..e7ebe89a902cf 100644
--- a/utils/frame/benchmarking-cli/Cargo.toml
+++ b/utils/frame/benchmarking-cli/Cargo.toml
@@ -27,7 +27,7 @@ sp-state-machine = { version = "0.10.0-dev", path = "../../../primitives/state-m
 codec = { version = "2.0.0", package = "parity-scale-codec" }
 structopt = "0.3.8"
 chrono = "0.4"
-serde = "1.0.126"
+serde = "1.0.136"
 handlebars = "3.5.0"
 Inflector = "0.11.4"
 linked-hash-map = "0.5.4"
diff --git a/utils/frame/remote-externalities/Cargo.toml b/utils/frame/remote-externalities/Cargo.toml
index d255499d6c3ad..97c7515460ef4 100644
--- a/utils/frame/remote-externalities/Cargo.toml
+++ b/utils/frame/remote-externalities/Cargo.toml
@@ -22,7 +22,7 @@ env_logger = "0.9"
 log = "0.4.11"
 codec = { package = "parity-scale-codec", version = "2.0.0" }
 serde_json = "1.0"
-serde = "1.0.126"
+serde = "1.0.136"
 
 sp-io = { version = "4.0.0-dev", path = "../../../primitives/io" }
 sp-core = { version = "4.0.0-dev", path = "../../../primitives/core" }
diff --git a/utils/frame/try-runtime/cli/Cargo.toml b/utils/frame/try-runtime/cli/Cargo.toml
index 5cc5ae6ee58bb..d1743e9a0f691 100644
--- a/utils/frame/try-runtime/cli/Cargo.toml
+++ b/utils/frame/try-runtime/cli/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 log = "0.4.8"
 parity-scale-codec = { version = "2.0.0" }
-serde = "1.0.126"
+serde = "1.0.136"
 structopt = "0.3.8"
 
 sc-service = { version = "0.10.0-dev", default-features = false, path = "../../../../client/service" }