diff --git a/Cargo.lock b/Cargo.lock
index b7d92f45334..41e9b13b910 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -13800,18 +13800,18 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 
 [[package]]
 name = "serde"
-version = "1.0.183"
+version = "1.0.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32ac8da02677876d532745a130fc9d8e6edfa81a269b107c5b00829b91d8eb3c"
+checksum = "9f5db24220c009de9bd45e69fb2938f4b6d2df856aa9304ce377b3180f83b7c1"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.183"
+version = "1.0.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aafe972d60b0b9bee71a91b92fee2d4fb3c9d7e8f6b179aa99f27203d99a4816"
+checksum = "5ad697f7e0b65af4983a4ce8f56ed5b357e8d3c36651bf6a7e13639c17b8e670"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/client/relay-chain-rpc-interface/Cargo.toml b/client/relay-chain-rpc-interface/Cargo.toml
index 9db12a35ac9..a9e861f0cd2 100644
--- a/client/relay-chain-rpc-interface/Cargo.toml
+++ b/client/relay-chain-rpc-interface/Cargo.toml
@@ -33,7 +33,7 @@ tracing = "0.1.37"
 async-trait = "0.1.73"
 url = "2.4.0"
 serde_json = "1.0.105"
-serde = "1.0.183"
+serde = "1.0.186"
 lru = "0.11.0"
 smoldot = { version = "0.11.0",  default_features = false, features = ["std"]}
 smoldot-light = { version = "0.9.0", default_features = false, features = ["std"] }
diff --git a/parachain-template/node/Cargo.toml b/parachain-template/node/Cargo.toml
index 76129260188..ebedb9f7c56 100644
--- a/parachain-template/node/Cargo.toml
+++ b/parachain-template/node/Cargo.toml
@@ -13,7 +13,7 @@ build = "build.rs"
 clap = { version = "4.3.24", features = ["derive"] }
 log = "0.4.20"
 codec = { package = "parity-scale-codec", version = "3.0.0" }
-serde = { version = "1.0.183", features = ["derive"] }
+serde = { version = "1.0.186", features = ["derive"] }
 jsonrpsee = { version = "0.16.2", features = ["server"] }
 futures = "0.3.28"
 
diff --git a/parachain-template/pallets/template/Cargo.toml b/parachain-template/pallets/template/Cargo.toml
index c51f32a0071..48380e7653c 100644
--- a/parachain-template/pallets/template/Cargo.toml
+++ b/parachain-template/pallets/template/Cargo.toml
@@ -21,7 +21,7 @@ frame-support = { git = "https://github.com/paritytech/substrate", default-featu
 frame-system = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 
 [dev-dependencies]
-serde = { version = "1.0.183" }
+serde = { version = "1.0.186" }
 
 # Substrate
 sp-core = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
diff --git a/parachains/runtimes/bridge-hubs/bridge-hub-kusama/Cargo.toml b/parachains/runtimes/bridge-hubs/bridge-hub-kusama/Cargo.toml
index e7c13aad594..4a951c28b38 100644
--- a/parachains/runtimes/bridge-hubs/bridge-hub-kusama/Cargo.toml
+++ b/parachains/runtimes/bridge-hubs/bridge-hub-kusama/Cargo.toml
@@ -13,7 +13,7 @@ codec = { package = "parity-scale-codec", version = "3.0.0", default-features =
 hex-literal = { version = "0.4.1" }
 log = { version = "0.4.20", default-features = false }
 scale-info = { version = "2.9.0", default-features = false, features = ["derive"] }
-serde = { version = "1.0.183", optional = true, features = ["derive"] }
+serde = { version = "1.0.186", optional = true, features = ["derive"] }
 smallvec = "1.11.0"
 
 # Substrate
diff --git a/parachains/runtimes/bridge-hubs/bridge-hub-polkadot/Cargo.toml b/parachains/runtimes/bridge-hubs/bridge-hub-polkadot/Cargo.toml
index e4c951c62d6..61d2466181a 100644
--- a/parachains/runtimes/bridge-hubs/bridge-hub-polkadot/Cargo.toml
+++ b/parachains/runtimes/bridge-hubs/bridge-hub-polkadot/Cargo.toml
@@ -13,7 +13,7 @@ codec = { package = "parity-scale-codec", version = "3.0.0", default-features =
 hex-literal = { version = "0.4.1" }
 log = { version = "0.4.20", default-features = false }
 scale-info = { version = "2.9.0", default-features = false, features = ["derive"] }
-serde = { version = "1.0.183", optional = true, features = ["derive"] }
+serde = { version = "1.0.186", optional = true, features = ["derive"] }
 smallvec = "1.11.0"
 
 # Substrate
diff --git a/parachains/runtimes/bridge-hubs/bridge-hub-rococo/Cargo.toml b/parachains/runtimes/bridge-hubs/bridge-hub-rococo/Cargo.toml
index 2e0ceda4fde..3e3de6ba78c 100644
--- a/parachains/runtimes/bridge-hubs/bridge-hub-rococo/Cargo.toml
+++ b/parachains/runtimes/bridge-hubs/bridge-hub-rococo/Cargo.toml
@@ -13,7 +13,7 @@ codec = { package = "parity-scale-codec", version = "3.0.0", default-features =
 hex-literal = { version = "0.4.1" }
 log = { version = "0.4.20", default-features = false }
 scale-info = { version = "2.9.0", default-features = false, features = ["derive"] }
-serde = { version = "1.0.183", optional = true, features = ["derive"] }
+serde = { version = "1.0.186", optional = true, features = ["derive"] }
 smallvec = "1.11.0"
 
 # Substrate
diff --git a/polkadot-parachain/Cargo.toml b/polkadot-parachain/Cargo.toml
index 09b91036728..7bd244c2c3f 100644
--- a/polkadot-parachain/Cargo.toml
+++ b/polkadot-parachain/Cargo.toml
@@ -17,7 +17,7 @@ codec = { package = "parity-scale-codec", version = "3.0.0" }
 futures = "0.3.28"
 hex-literal = "0.4.1"
 log = "0.4.20"
-serde = { version = "1.0.183", features = ["derive"] }
+serde = { version = "1.0.186", features = ["derive"] }
 serde_json = "1.0.105"
 
 # Local
diff --git a/test/service/Cargo.toml b/test/service/Cargo.toml
index 711ab9cb3d1..1232e0f0489 100644
--- a/test/service/Cargo.toml
+++ b/test/service/Cargo.toml
@@ -15,7 +15,7 @@ codec = { package = "parity-scale-codec", version = "3.0.0" }
 criterion = { version = "0.5.1", features = [ "async_tokio" ] }
 jsonrpsee = { version = "0.16.2", features = ["server"] }
 rand = "0.8.5"
-serde = { version = "1.0.183", features = ["derive"] }
+serde = { version = "1.0.186", features = ["derive"] }
 tokio = { version = "1.32.0", features = ["macros"] }
 tracing = "0.1.37"
 url = "2.4.0"