diff --git a/substrate/Cargo.lock b/substrate/Cargo.lock
index fb9561dfab..d3b0771c45 100644
--- a/substrate/Cargo.lock
+++ b/substrate/Cargo.lock
@@ -9399,9 +9399,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.74"
+version = "1.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee2bb9cd061c5865d345bb02ca49fcef1391741b672b54a0bf7b679badec3142"
+checksum = "8e8d9fa5c3b304765ce1fd9c4c8a3de2c8db365a5b91be52f186efc675681d95"
 dependencies = [
  "itoa 1.0.1",
  "ryu",
diff --git a/substrate/bin/node/bench/Cargo.toml b/substrate/bin/node/bench/Cargo.toml
index 5b728258dd..7bdf46e2b6 100644
--- a/substrate/bin/node/bench/Cargo.toml
+++ b/substrate/bin/node/bench/Cargo.toml
@@ -18,7 +18,7 @@ sc-client-api = { version = "4.0.0-dev", path = "../../../client/api/" }
 sp-runtime = { version = "6.0.0", path = "../../../primitives/runtime" }
 sp-state-machine = { version = "0.12.0", path = "../../../primitives/state-machine" }
 serde = "1.0.136"
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 derive_more = "0.99.16"
 kvdb = "0.11.0"
 kvdb-rocksdb = "0.15.1"
diff --git a/substrate/client/beefy/rpc/Cargo.toml b/substrate/client/beefy/rpc/Cargo.toml
index 071b07b6b2..ebbb9527f9 100644
--- a/substrate/client/beefy/rpc/Cargo.toml
+++ b/substrate/client/beefy/rpc/Cargo.toml
@@ -31,7 +31,7 @@ beefy-gadget = { version = "4.0.0-dev", path = "../." }
 beefy-primitives = { version = "4.0.0-dev", path = "../../../primitives/beefy" }
 
 [dev-dependencies]
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 
 sc-rpc = { version = "4.0.0-dev", path = "../../rpc", features = [
     "test-helpers",
diff --git a/substrate/client/chain-spec/Cargo.toml b/substrate/client/chain-spec/Cargo.toml
index 68d591254d..e18f9b72c7 100644
--- a/substrate/client/chain-spec/Cargo.toml
+++ b/substrate/client/chain-spec/Cargo.toml
@@ -18,7 +18,7 @@ impl-trait-for-tuples = "0.2.1"
 sc-network = { version = "0.10.0-dev", path = "../network" }
 sp-core = { version = "6.0.0", path = "../../primitives/core" }
 serde = { version = "1.0.136", features = ["derive"] }
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 sp-runtime = { version = "6.0.0", path = "../../primitives/runtime" }
 sc-telemetry = { version = "4.0.0-dev", path = "../telemetry" }
 codec = { package = "parity-scale-codec", version = "3.0.0" }
diff --git a/substrate/client/cli/Cargo.toml b/substrate/client/cli/Cargo.toml
index c799fd6dee..665bd6acfa 100644
--- a/substrate/client/cli/Cargo.toml
+++ b/substrate/client/cli/Cargo.toml
@@ -25,7 +25,7 @@ rand = "0.7.3"
 regex = "1.5.4"
 rpassword = "5.0.0"
 serde = "1.0.136"
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 thiserror = "1.0.30"
 tiny-bip39 = "0.8.2"
 tokio = { version = "1.15", features = ["signal", "rt-multi-thread", "parking_lot"] }
diff --git a/substrate/client/consensus/babe/rpc/Cargo.toml b/substrate/client/consensus/babe/rpc/Cargo.toml
index 7db7edd2de..ee6549480a 100644
--- a/substrate/client/consensus/babe/rpc/Cargo.toml
+++ b/substrate/client/consensus/babe/rpc/Cargo.toml
@@ -33,7 +33,7 @@ sp-keystore = { version = "0.12.0", path = "../../../../primitives/keystore" }
 
 [dev-dependencies]
 sc-consensus = { version = "0.10.0-dev", path = "../../../consensus/common" }
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 sp-keyring = { version = "6.0.0", path = "../../../../primitives/keyring" }
 sc-keystore = { version = "4.0.0-dev", path = "../../../keystore" }
 substrate-test-runtime-client = { version = "2.0.0", path = "../../../../test-utils/runtime/client" }
diff --git a/substrate/client/finality-grandpa/Cargo.toml b/substrate/client/finality-grandpa/Cargo.toml
index 9733f35bd0..86cd57fc7c 100644
--- a/substrate/client/finality-grandpa/Cargo.toml
+++ b/substrate/client/finality-grandpa/Cargo.toml
@@ -37,7 +37,7 @@ sp-keystore = { version = "0.12.0", path = "../../primitives/keystore" }
 sp-api = { version = "4.0.0-dev", path = "../../primitives/api" }
 sc-telemetry = { version = "4.0.0-dev", path = "../telemetry" }
 sc-keystore = { version = "4.0.0-dev", path = "../keystore" }
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 sc-client-api = { version = "4.0.0-dev", path = "../api" }
 sp-blockchain = { version = "4.0.0-dev", path = "../../primitives/blockchain" }
 sc-network = { version = "0.10.0-dev", path = "../network" }
diff --git a/substrate/client/keystore/Cargo.toml b/substrate/client/keystore/Cargo.toml
index 09fca2a843..844110f668 100644
--- a/substrate/client/keystore/Cargo.toml
+++ b/substrate/client/keystore/Cargo.toml
@@ -22,7 +22,7 @@ sp-core = { version = "6.0.0", path = "../../primitives/core" }
 sp-keystore = { version = "0.12.0", path = "../../primitives/keystore" }
 hex = "0.4.0"
 parking_lot = "0.12.0"
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 
 [dev-dependencies]
 tempfile = "3.1.0"
diff --git a/substrate/client/network/Cargo.toml b/substrate/client/network/Cargo.toml
index 0dbdd3ec50..671271fcb3 100644
--- a/substrate/client/network/Cargo.toml
+++ b/substrate/client/network/Cargo.toml
@@ -45,7 +45,7 @@ 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 = "1.0.136", features = ["derive"] }
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 smallvec = "1.8.0"
 sp-arithmetic = { version = "5.0.0", path = "../../primitives/arithmetic" }
 sp-blockchain = { version = "4.0.0-dev", path = "../../primitives/blockchain" }
diff --git a/substrate/client/peerset/Cargo.toml b/substrate/client/peerset/Cargo.toml
index 1bbf8bd6e9..12991eac81 100644
--- a/substrate/client/peerset/Cargo.toml
+++ b/substrate/client/peerset/Cargo.toml
@@ -18,7 +18,7 @@ futures = "0.3.19"
 libp2p = { version = "0.40.0", default-features = false }
 sc-utils = { version = "4.0.0-dev", path = "../utils"}
 log = "0.4.8"
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 wasm-timer = "0.2"
 
 [dev-dependencies]
diff --git a/substrate/client/rpc-api/Cargo.toml b/substrate/client/rpc-api/Cargo.toml
index 510c59e5b8..38ac1fc443 100644
--- a/substrate/client/rpc-api/Cargo.toml
+++ b/substrate/client/rpc-api/Cargo.toml
@@ -28,7 +28,7 @@ sp-version = { version = "5.0.0", path = "../../primitives/version" }
 sp-runtime = { version = "6.0.0", path = "../../primitives/runtime" }
 sc-chain-spec = { path = "../chain-spec", version = "4.0.0-dev" }
 serde = { version = "1.0.136", features = ["derive"] }
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 sc-transaction-pool-api = { version = "4.0.0-dev", path = "../transaction-pool/api" }
 sp-rpc = { version = "6.0.0", path = "../../primitives/rpc" }
 sp-tracing = { version = "5.0.0", path = "../../primitives/tracing" }
diff --git a/substrate/client/rpc-servers/Cargo.toml b/substrate/client/rpc-servers/Cargo.toml
index 496152ecb7..f0c3fd496a 100644
--- a/substrate/client/rpc-servers/Cargo.toml
+++ b/substrate/client/rpc-servers/Cargo.toml
@@ -18,7 +18,7 @@ jsonrpc-core = "18.0.0"
 pubsub = { package = "jsonrpc-pubsub", version = "18.0.0" }
 log = "0.4.8"
 prometheus-endpoint = { package = "substrate-prometheus-endpoint", path = "../../utils/prometheus", version = "0.10.0-dev"}
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 tokio = { version = "1.15", features = ["parking_lot"] }
 http = { package = "jsonrpc-http-server", version = "18.0.0" }
 ipc = { package = "jsonrpc-ipc-server", version = "18.0.0" }
diff --git a/substrate/client/rpc/Cargo.toml b/substrate/client/rpc/Cargo.toml
index 314c49d2f8..eeeb67f362 100644
--- a/substrate/client/rpc/Cargo.toml
+++ b/substrate/client/rpc/Cargo.toml
@@ -23,7 +23,7 @@ log = "0.4.8"
 sp-core = { version = "6.0.0", path = "../../primitives/core" }
 rpc = { package = "jsonrpc-core", version = "18.0.0" }
 sp-version = { version = "5.0.0", path = "../../primitives/version" }
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 sp-session = { version = "4.0.0-dev", path = "../../primitives/session" }
 sp-offchain = { version = "4.0.0-dev", path = "../../primitives/offchain" }
 sp-runtime = { version = "6.0.0", path = "../../primitives/runtime" }
diff --git a/substrate/client/service/Cargo.toml b/substrate/client/service/Cargo.toml
index 84ac9e3de6..737a29f1db 100644
--- a/substrate/client/service/Cargo.toml
+++ b/substrate/client/service/Cargo.toml
@@ -34,7 +34,7 @@ exit-future = "0.2.0"
 pin-project = "1.0.10"
 hash-db = "0.15.2"
 serde = "1.0.136"
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 sc-keystore = { version = "4.0.0-dev", path = "../keystore" }
 sp-runtime = { version = "6.0.0", path = "../../primitives/runtime" }
 sp-trie = { version = "6.0.0", path = "../../primitives/trie" }
diff --git a/substrate/client/sync-state-rpc/Cargo.toml b/substrate/client/sync-state-rpc/Cargo.toml
index e6072267f9..e13631f210 100644
--- a/substrate/client/sync-state-rpc/Cargo.toml
+++ b/substrate/client/sync-state-rpc/Cargo.toml
@@ -22,7 +22,7 @@ sc-client-api = { version = "4.0.0-dev", path = "../api" }
 sc-consensus-babe = { version = "0.10.0-dev", path = "../consensus/babe" }
 sc-consensus-epochs = { version = "0.10.0-dev", path = "../consensus/epochs" }
 sc-finality-grandpa = { version = "0.10.0-dev", path = "../finality-grandpa" }
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 serde = { version = "1.0.136", features = ["derive"] }
 sp-blockchain = { version = "4.0.0-dev", path = "../../primitives/blockchain" }
 sp-runtime = { version = "6.0.0", path = "../../primitives/runtime" }
diff --git a/substrate/client/telemetry/Cargo.toml b/substrate/client/telemetry/Cargo.toml
index 7bdd60a037..6daa75f453 100644
--- a/substrate/client/telemetry/Cargo.toml
+++ b/substrate/client/telemetry/Cargo.toml
@@ -23,6 +23,6 @@ log = "0.4.8"
 pin-project = "1.0.10"
 rand = "0.7.2"
 serde = { version = "1.0.136", features = ["derive"] }
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 chrono = "0.4.19"
 thiserror = "1.0.30"
diff --git a/substrate/frame/merkle-mountain-range/rpc/Cargo.toml b/substrate/frame/merkle-mountain-range/rpc/Cargo.toml
index 7124682c56..9ac26c2ed5 100644
--- a/substrate/frame/merkle-mountain-range/rpc/Cargo.toml
+++ b/substrate/frame/merkle-mountain-range/rpc/Cargo.toml
@@ -27,4 +27,4 @@ sp-runtime = { version = "6.0.0", path = "../../../primitives/runtime" }
 pallet-mmr-primitives = { version = "4.0.0-dev", path = "../primitives" }
 
 [dev-dependencies]
-serde_json = "1.0.74"
+serde_json = "1.0.79"
diff --git a/substrate/frame/transaction-payment/Cargo.toml b/substrate/frame/transaction-payment/Cargo.toml
index ea894e7cad..d37a98deec 100644
--- a/substrate/frame/transaction-payment/Cargo.toml
+++ b/substrate/frame/transaction-payment/Cargo.toml
@@ -29,7 +29,7 @@ frame-support = { version = "4.0.0-dev", default-features = false, path = "../su
 frame-system = { version = "4.0.0-dev", default-features = false, path = "../system" }
 
 [dev-dependencies]
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 pallet-balances = { version = "4.0.0-dev", path = "../balances" }
 
 [features]
diff --git a/substrate/frame/transaction-payment/asset-tx-payment/Cargo.toml b/substrate/frame/transaction-payment/asset-tx-payment/Cargo.toml
index ec07fc967c..0c2bcb730a 100644
--- a/substrate/frame/transaction-payment/asset-tx-payment/Cargo.toml
+++ b/substrate/frame/transaction-payment/asset-tx-payment/Cargo.toml
@@ -30,7 +30,7 @@ serde = { version = "1.0.136", optional = true }
 
 [dev-dependencies]
 smallvec = "1.8.0"
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 
 sp-storage = { version = "6.0.0", default-features = false, path = "../../../primitives/storage" }
 
diff --git a/substrate/primitives/rpc/Cargo.toml b/substrate/primitives/rpc/Cargo.toml
index f2d048ef71..dcfd48558d 100644
--- a/substrate/primitives/rpc/Cargo.toml
+++ b/substrate/primitives/rpc/Cargo.toml
@@ -18,4 +18,4 @@ sp-core = { version = "6.0.0", path = "../core" }
 rustc-hash = "1.1.0"
 
 [dev-dependencies]
-serde_json = "1.0.74"
+serde_json = "1.0.79"
diff --git a/substrate/primitives/runtime/Cargo.toml b/substrate/primitives/runtime/Cargo.toml
index 5f7b45ba15..a0acdaf27d 100644
--- a/substrate/primitives/runtime/Cargo.toml
+++ b/substrate/primitives/runtime/Cargo.toml
@@ -32,7 +32,7 @@ hash256-std-hasher = { version = "0.15.2", default-features = false }
 either = { version = "1.5", default-features = false }
 
 [dev-dependencies]
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 rand = "0.7.2"
 sp-state-machine = { version = "0.12.0", path = "../state-machine" }
 sp-api = { version = "4.0.0-dev", path = "../api" }
diff --git a/substrate/primitives/serializer/Cargo.toml b/substrate/primitives/serializer/Cargo.toml
index 6a9fb5d90d..c81f1cd10a 100644
--- a/substrate/primitives/serializer/Cargo.toml
+++ b/substrate/primitives/serializer/Cargo.toml
@@ -15,4 +15,4 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = "1.0.136"
-serde_json = "1.0.74"
+serde_json = "1.0.79"
diff --git a/substrate/test-utils/client/Cargo.toml b/substrate/test-utils/client/Cargo.toml
index f3299d800a..1f7115cf16 100644
--- a/substrate/test-utils/client/Cargo.toml
+++ b/substrate/test-utils/client/Cargo.toml
@@ -16,7 +16,7 @@ codec = { package = "parity-scale-codec", version = "3.0.0" }
 futures = "0.3.19"
 hex = "0.4"
 serde = "1.0.136"
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 sc-client-api = { version = "4.0.0-dev", path = "../../client/api" }
 sc-client-db = { version = "0.10.0-dev", features = [
     "test-helpers",
diff --git a/substrate/utils/frame/benchmarking-cli/Cargo.toml b/substrate/utils/frame/benchmarking-cli/Cargo.toml
index 5575bb833c..b28fe195a2 100644
--- a/substrate/utils/frame/benchmarking-cli/Cargo.toml
+++ b/substrate/utils/frame/benchmarking-cli/Cargo.toml
@@ -38,7 +38,7 @@ codec = { version = "3.0.0", package = "parity-scale-codec" }
 clap = { version = "3.1.6", features = ["derive"] }
 chrono = "0.4"
 serde = "1.0.136"
-serde_json = "1.0.74"
+serde_json = "1.0.79"
 handlebars = "4.1.6"
 Inflector = "0.11.4"
 linked-hash-map = "0.5.4"