diff --git a/Cargo.lock b/Cargo.lock
index 4593c6fa39..ec624f4a86 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -403,7 +403,7 @@ checksum = "0e97ce7de6cf12de5d7226c73f5ba9811622f4db3a5b91b55c53e987e5f91cba"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -1026,7 +1026,7 @@ checksum = "71655c45cb9845d3270c9d6df84ebe72b4dad3c2ba3f7023ad47c144e4e473a5"
 dependencies = [
  "bitflags",
  "clap_lex 0.2.4",
- "indexmap",
+ "indexmap 1.9.2",
  "textwrap",
 ]
 
@@ -2016,7 +2016,7 @@ checksum = "5e9a1f9f7d83e59740248a6e14ecf93929ade55027844dfcea78beafccc15745"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -2051,6 +2051,12 @@ version = "1.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e48c92028aaa870e83d51c64e5d4e0b6981b360c522198c23959f219a4e1b15b"
 
+[[package]]
+name = "equivalent"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
+
 [[package]]
 name = "errno"
 version = "0.2.8"
@@ -2376,12 +2382,12 @@ dependencies = [
  "frame-election-provider-support",
  "frame-support",
  "parity-scale-codec",
- "proc-macro-crate",
+ "proc-macro-crate 1.1.3",
  "proc-macro2",
  "quote",
  "scale-info",
  "sp-arithmetic",
- "syn 2.0.14",
+ "syn 2.0.48",
  "trybuild",
 ]
 
@@ -2523,7 +2529,7 @@ dependencies = [
  "proc-macro-warning",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -2531,10 +2537,10 @@ name = "frame-support-procedural-tools"
 version = "4.0.0-dev"
 dependencies = [
  "frame-support-procedural-tools-derive",
- "proc-macro-crate",
+ "proc-macro-crate 1.1.3",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -2543,7 +2549,7 @@ version = "3.0.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -2758,7 +2764,7 @@ checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -2909,7 +2915,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "22030e2c5a68ec659fde1e949a745124b48e6fa8b045b7ed5bd1fe4ccc5c4e5d"
 dependencies = [
  "fallible-iterator",
- "indexmap",
+ "indexmap 1.9.2",
  "stable_deref_trait",
 ]
 
@@ -2985,7 +2991,7 @@ dependencies = [
  "futures-sink",
  "futures-util",
  "http",
- "indexmap",
+ "indexmap 1.9.2",
  "slab",
  "tokio",
  "tokio-util",
@@ -3045,6 +3051,12 @@ dependencies = [
  "ahash 0.8.3",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.14.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
+
 [[package]]
 name = "heck"
 version = "0.4.1"
@@ -3359,6 +3371,16 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "indexmap"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d530e1a18b1cb4c484e6e34556a0d948706958449fca0cab753d649f2bce3d1f"
+dependencies = [
+ "equivalent",
+ "hashbrown 0.14.3",
+]
+
 [[package]]
 name = "indexmap-nostd"
 version = "0.4.0"
@@ -3598,7 +3620,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baa6da1e4199c10d7b1d0a6e5e8bd8e55f351163b6f4b3cbb044672a69bd4c1c"
 dependencies = [
  "heck",
- "proc-macro-crate",
+ "proc-macro-crate 1.1.3",
  "proc-macro2",
  "quote",
  "syn 1.0.109",
@@ -4860,7 +4882,7 @@ version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d6d4752e6230d8ef7adf7bd5d8c4b1f6561c1014c5ba9a37445ccefe18aa1db"
 dependencies = [
- "proc-macro-crate",
+ "proc-macro-crate 1.1.3",
  "proc-macro-error",
  "proc-macro2",
  "quote",
@@ -5501,7 +5523,7 @@ checksum = "21158b2c33aa6d4561f1c0a6ea283ca92bc54802a93b263e910746d679a7eb53"
 dependencies = [
  "crc32fast",
  "hashbrown 0.12.3",
- "indexmap",
+ "indexmap 1.9.2",
  "memchr",
 ]
 
@@ -6006,7 +6028,7 @@ version = "4.0.0-dev"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -6901,11 +6923,11 @@ dependencies = [
 name = "pallet-staking-reward-curve"
 version = "4.0.0-dev"
 dependencies = [
- "proc-macro-crate",
+ "proc-macro-crate 1.1.3",
  "proc-macro2",
  "quote",
  "sp-runtime",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -7191,9 +7213,9 @@ dependencies = [
 
 [[package]]
 name = "parity-scale-codec"
-version = "3.4.0"
+version = "3.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "637935964ff85a605d114591d4d2c13c5d1ba2806dae97cea6bf180238a749ac"
+checksum = "756d439303e94fae44f288ba881ad29670c65b0c4b0e05674ca81061bb65f2c5"
 dependencies = [
  "arrayvec 0.7.2",
  "bitvec",
@@ -7206,11 +7228,11 @@ dependencies = [
 
 [[package]]
 name = "parity-scale-codec-derive"
-version = "3.1.4"
+version = "3.6.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86b26a931f824dd4eca30b3e43bb4f31cd5f0d3a403c5f5ff27106b805bfde7b"
+checksum = "be30eaf4b0a9fba5336683b38de57bb86d179a35862ba6bfcf57625d006bde5b"
 dependencies = [
- "proc-macro-crate",
+ "proc-macro-crate 2.0.1",
  "proc-macro2",
  "quote",
  "syn 1.0.109",
@@ -7387,7 +7409,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4dd7d28ee937e54fe3080c91faa1c3a46c06de6252988a7f4592ba2310ef22a4"
 dependencies = [
  "fixedbitset",
- "indexmap",
+ "indexmap 1.9.2",
 ]
 
 [[package]]
@@ -7642,6 +7664,16 @@ dependencies = [
  "toml 0.5.11",
 ]
 
+[[package]]
+name = "proc-macro-crate"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97dc5fea232fc28d2f597b37c4876b348a40e33f3b02cc975c8d006d78d94b1a"
+dependencies = [
+ "toml_datetime",
+ "toml_edit 0.20.2",
+]
+
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -7679,9 +7711,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.56"
+version = "1.0.76"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b63bdb0cd06f1f4dedf69b254734f9b45af66e4a031e42a7480257d9898b435"
+checksum = "95fc56cda0b5c3325f5fbbd7ff9fda9e02bb00bb3dac51252d2f1bfa1cb8cc8c"
 dependencies = [
  "unicode-ident",
 ]
@@ -7845,9 +7877,9 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.26"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4424af4bf778aae2051a77b60283332f386554255d722233d09fbfc7e30da2fc"
+checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
 dependencies = [
  "proc-macro2",
 ]
@@ -8514,10 +8546,10 @@ dependencies = [
 name = "sc-chain-spec-derive"
 version = "4.0.0-dev"
 dependencies = [
- "proc-macro-crate",
+ "proc-macro-crate 1.1.3",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -9740,10 +9772,10 @@ dependencies = [
 name = "sc-tracing-proc-macro"
 version = "4.0.0-dev"
 dependencies = [
- "proc-macro-crate",
+ "proc-macro-crate 1.1.3",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -9829,7 +9861,7 @@ version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "61fa974aea2d63dd18a4ec3a49d59af9f34178c73a4f56d2f18205628d00681e"
 dependencies = [
- "proc-macro-crate",
+ "proc-macro-crate 1.1.3",
  "proc-macro2",
  "quote",
  "syn 1.0.109",
@@ -10030,22 +10062,22 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 
 [[package]]
 name = "serde"
-version = "1.0.152"
+version = "1.0.195"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb7d1f0d3021d347a83e556fc4683dea2ea09d87bccdf88ff5c12545d89d5efb"
+checksum = "63261df402c67811e9ac6def069e4786148c4563f4b50fd4bf30aa370d626b02"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.152"
+version = "1.0.195"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af487d118eecd09402d70a5d72551860e788df87b464af30e5ea6a38c75c541e"
+checksum = "46fe8f8603d81ba86327b23a2e9cdf49e1255fb94a4c5f297f6ee0547178ea2c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.109",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -10300,10 +10332,10 @@ dependencies = [
  "assert_matches",
  "blake2",
  "expander",
- "proc-macro-crate",
+ "proc-macro-crate 1.1.3",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -10600,7 +10632,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "sp-core-hashing",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -10617,7 +10649,7 @@ version = "5.0.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -10842,10 +10874,10 @@ name = "sp-runtime-interface-proc-macro"
 version = "6.0.0"
 dependencies = [
  "Inflector",
- "proc-macro-crate",
+ "proc-macro-crate 1.1.3",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -11071,7 +11103,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "sp-version",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -11505,10 +11537,10 @@ dependencies = [
 name = "substrate-test-utils-derive"
 version = "0.10.0-dev"
 dependencies = [
- "proc-macro-crate",
+ "proc-macro-crate 1.1.3",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -11564,9 +11596,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.14"
+version = "2.0.48"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcf316d5356ed6847742d036f8a39c3b8435cac10bd528a4bd461928a6ab34d5"
+checksum = "0f3531638e407dfc0814761abb7c00a5b54992b849452a0646b7f65c9f770f3f"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -11825,7 +11857,7 @@ checksum = "61a573bdc87985e9d6ddeed1b3d864e8a302c847e40d647746df2f1de209d1ce"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -11897,14 +11929,14 @@ dependencies = [
  "serde",
  "serde_spanned",
  "toml_datetime",
- "toml_edit",
+ "toml_edit 0.19.8",
 ]
 
 [[package]]
 name = "toml_datetime"
-version = "0.6.1"
+version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ab8ed2edee10b50132aed5f331333428b011c99402b5a534154ed15746f9622"
+checksum = "7cda73e2f1397b1262d6dfdcef8aafae14d1de7748d66822d3bfeeb6d03e5e4b"
 dependencies = [
  "serde",
 ]
@@ -11915,11 +11947,22 @@ version = "0.19.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "239410c8609e8125456927e6707163a3b1fdb40561e4b803bc041f466ccfdc13"
 dependencies = [
- "indexmap",
+ "indexmap 1.9.2",
  "serde",
  "serde_spanned",
  "toml_datetime",
- "winnow",
+ "winnow 0.4.1",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "396e4d48bbb2b7554c944bde63101b5ae446cff6ec4a24227428f15eb72ef338"
+dependencies = [
+ "indexmap 2.1.0",
+ "toml_datetime",
+ "winnow 0.5.34",
 ]
 
 [[package]]
@@ -12683,7 +12726,7 @@ version = "0.100.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "64b20236ab624147dfbb62cf12a19aaf66af0e41b8398838b66e997d07d269d4"
 dependencies = [
- "indexmap",
+ "indexmap 1.9.2",
  "url",
 ]
 
@@ -12705,7 +12748,7 @@ dependencies = [
  "anyhow",
  "bincode",
  "cfg-if",
- "indexmap",
+ "indexmap 1.9.2",
  "libc",
  "log",
  "object 0.29.0",
@@ -12783,7 +12826,7 @@ dependencies = [
  "anyhow",
  "cranelift-entity",
  "gimli 0.26.2",
- "indexmap",
+ "indexmap 1.9.2",
  "log",
  "object 0.29.0",
  "serde",
@@ -12848,7 +12891,7 @@ dependencies = [
  "anyhow",
  "cc",
  "cfg-if",
- "indexmap",
+ "indexmap 1.9.2",
  "libc",
  "log",
  "mach",
@@ -13347,6 +13390,15 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "winnow"
+version = "0.5.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7cf47b659b318dccbd69cc4797a39ae128f533dce7902a1096044d1967b9c16"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "winreg"
 version = "0.10.1"
diff --git a/client/cli/Cargo.toml b/client/cli/Cargo.toml
index c0da53ad12..f082e43a64 100644
--- a/client/cli/Cargo.toml
+++ b/client/cli/Cargo.toml
@@ -21,7 +21,7 @@ futures = "0.3.21"
 libp2p = "0.50.0"
 log = "0.4.17"
 names = { version = "0.13.0", default-features = false }
-parity-scale-codec = "3.2.2"
+parity-scale-codec = "3.6.3"
 rand = "0.8.5"
 regex = "1.6.0"
 rpassword = "7.0.0"
diff --git a/client/consensus/grandpa/Cargo.toml b/client/consensus/grandpa/Cargo.toml
index 67c58d37a2..031b4d89dc 100644
--- a/client/consensus/grandpa/Cargo.toml
+++ b/client/consensus/grandpa/Cargo.toml
@@ -22,7 +22,7 @@ finality-grandpa = { version = "0.16.2", features = ["derive-codec"] }
 futures = "0.3.21"
 futures-timer = "3.0.1"
 log = "0.4.17"
-parity-scale-codec = { version = "3.2.2", features = ["derive"] }
+parity-scale-codec = { version = "3.6.3", features = ["derive"] }
 parking_lot = "0.12.1"
 rand = "0.8.5"
 serde_json = "1.0.85"
diff --git a/client/consensus/grandpa/rpc/Cargo.toml b/client/consensus/grandpa/rpc/Cargo.toml
index 76a06ad298..37731a8384 100644
--- a/client/consensus/grandpa/rpc/Cargo.toml
+++ b/client/consensus/grandpa/rpc/Cargo.toml
@@ -14,7 +14,7 @@ finality-grandpa = { version = "0.16.2", features = ["derive-codec"] }
 futures = "0.3.16"
 jsonrpsee = { version = "0.16.2", features = ["client-core", "server", "macros"] }
 log = "0.4.8"
-parity-scale-codec = { version = "3.2.2", features = ["derive"] }
+parity-scale-codec = { version = "3.6.3", features = ["derive"] }
 serde = { version = "1.0.105", features = ["derive"] }
 thiserror = "1.0"
 sc-client-api = { version = "4.0.0-dev", path = "../../../api" }
diff --git a/client/service/test/Cargo.toml b/client/service/test/Cargo.toml
index 94a844aa7d..9e643b501e 100644
--- a/client/service/test/Cargo.toml
+++ b/client/service/test/Cargo.toml
@@ -17,7 +17,7 @@ array-bytes = "4.1"
 fdlimit = "0.2.1"
 futures = "0.3.21"
 log = "0.4.17"
-parity-scale-codec = "3.2.2"
+parity-scale-codec = "3.6.3"
 parking_lot = "0.12.1"
 tempfile = "3.1.0"
 tokio = { version = "1.22.0", features = ["time"] }
diff --git a/frame/election-provider-support/solution-type/Cargo.toml b/frame/election-provider-support/solution-type/Cargo.toml
index 95ad6f2266..e35bceaf6d 100644
--- a/frame/election-provider-support/solution-type/Cargo.toml
+++ b/frame/election-provider-support/solution-type/Cargo.toml
@@ -21,7 +21,7 @@ proc-macro2 = "1.0.56"
 proc-macro-crate = "1.1.3"
 
 [dev-dependencies]
-parity-scale-codec = "3.2.2"
+parity-scale-codec = "3.6.3"
 scale-info = "2.1.1"
 sp-arithmetic = { version = "6.0.0", path = "../../../primitives/arithmetic" }
 # used by generate_solution_type:
diff --git a/utils/frame/try-runtime/cli/Cargo.toml b/utils/frame/try-runtime/cli/Cargo.toml
index 686d27eefb..7b814b154b 100644
--- a/utils/frame/try-runtime/cli/Cargo.toml
+++ b/utils/frame/try-runtime/cli/Cargo.toml
@@ -39,7 +39,7 @@ async-trait = "0.1.57"
 clap = { version = "4.0.9", features = ["derive"] }
 hex = { version = "0.4.3", default-features = false }
 log = "0.4.17"
-parity-scale-codec = "3.2.2"
+parity-scale-codec = "3.6.3"
 serde = "1.0.136"
 serde_json = "1.0.85"
 zstd = { version = "0.12.3", default-features = false }