diff --git a/Cargo.lock b/Cargo.lock
index 01a67a8031..bce297e146 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -190,7 +190,7 @@ checksum = "c0391754c09fab4eae3404d19d0d297aa1c670c1775ab51d8a5312afeca23157"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -205,7 +205,7 @@ dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
  "syn-solidity",
  "tiny-keccak",
 ]
@@ -1226,7 +1226,7 @@ checksum = "16e62a023e7c117e27523144c5d2459f4397fcc3cab0085af8e2224f643a0193"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -1243,7 +1243,7 @@ checksum = "a66537f1bb974b254c98ed142ff995236e81b9d0fe4db0575f46612cb15eb0f9"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -1425,7 +1425,7 @@ dependencies = [
  "regex",
  "rustc-hash",
  "shlex",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -2699,7 +2699,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -3909,7 +3909,7 @@ dependencies = [
  "proc-macro-crate 2.0.1",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -4420,7 +4420,7 @@ checksum = "83fdaf97f4804dcebfa5862639bc9ce4121e82140bec2a987ac5140294865b5b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -4460,7 +4460,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "scratch",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -4477,7 +4477,7 @@ checksum = "50c49547d73ba8dcfd4ad7325d64c6d5391ff4224d498fc39a6f3f49825a530d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -4685,7 +4685,7 @@ checksum = "487585f4d0c6655fe74905e2504d8ad6908e4db67f744eb140876906c2f3175d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -4746,7 +4746,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "regex",
- "syn 2.0.41",
+ "syn 2.0.43",
  "termcolor",
  "toml 0.7.8",
  "walkdir",
@@ -4974,7 +4974,7 @@ checksum = "5e9a1f9f7d83e59740248a6e14ecf93929ade55027844dfcea78beafccc15745"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -4985,7 +4985,7 @@ checksum = "c2ad8cef1d801a4686bfd8919f0b30eac4c8e48968c437a6405ded4fb5272d2b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -5153,7 +5153,7 @@ dependencies = [
  "fs-err",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -5541,7 +5541,7 @@ dependencies = [
  "quote",
  "scale-info",
  "sp-arithmetic",
- "syn 2.0.41",
+ "syn 2.0.43",
  "trybuild",
 ]
 
@@ -5694,7 +5694,7 @@ dependencies = [
  "quote",
  "regex",
  "sp-core-hashing",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -5705,7 +5705,7 @@ dependencies = [
  "proc-macro-crate 2.0.1",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -5714,7 +5714,7 @@ version = "3.0.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -5947,7 +5947,7 @@ checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -7884,7 +7884,7 @@ dependencies = [
  "macro_magic_core",
  "macro_magic_macros",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -7898,7 +7898,7 @@ dependencies = [
  "macro_magic_core_macros",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -7909,7 +7909,7 @@ checksum = "9ea73aa640dc01d62a590d48c0c3521ed739d53b27f919b25c3551e233481654"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -7920,7 +7920,7 @@ checksum = "ef9d79ae96aaba821963320eb2b6e34d17df1e5a83d8a1985c29cc5be59577b3"
 dependencies = [
  "macro_magic_core",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -9659,7 +9659,7 @@ version = "4.0.0-dev"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -10819,7 +10819,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "sp-runtime",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -11930,7 +11930,7 @@ dependencies = [
  "pest_meta",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -11971,7 +11971,7 @@ checksum = "4359fd9c9171ec6e8c62926d6faaf553a8dc3f64e1507e76da7911b4f6a04405"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -13937,7 +13937,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c64d9ba0963cdcea2e1b2230fbae2bab30eb25a174be395c41e764bfb65dd62"
 dependencies = [
  "proc-macro2",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -14029,7 +14029,7 @@ checksum = "9b698b0b09d40e9b7c1a47b132d66a8b54bcd20583d9b6d06e4535e383b4405c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -14101,7 +14101,7 @@ checksum = "440f724eba9f6996b75d63681b0a92b06947f1457076d503a4d2e2c8f56442b8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -14519,7 +14519,7 @@ checksum = "7f7473c2cfcf90008193dd0e3e16599455cb601a9fce322b5bb55de799664925"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -15354,7 +15354,7 @@ dependencies = [
  "proc-macro-crate 2.0.1",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -16610,7 +16610,7 @@ dependencies = [
  "proc-macro-crate 2.0.1",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -17028,7 +17028,7 @@ checksum = "43576ca501357b9b071ac53cdc7da8ef0cbd9493d8df094cd821777ea6e894d3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -17085,9 +17085,9 @@ dependencies = [
 
 [[package]]
 name = "serde_yaml"
-version = "0.9.27"
+version = "0.9.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3cc7a1570e38322cfe4154732e5110f887ea57e22b76f4bfd32b5bdd3368666c"
+checksum = "a15e0ef66bf939a7c890a0bf6d5a733c70202225f9888a89ed5c62298b019129"
 dependencies = [
  "indexmap 2.0.0",
  "itoa",
@@ -17118,7 +17118,7 @@ checksum = "91d129178576168c589c9ec973feedf7d3126c01ac2bf08795109aa35b69fb8f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -17908,7 +17908,7 @@ dependencies = [
  "proc-macro-crate 2.0.1",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -18243,7 +18243,7 @@ version = "9.0.0"
 dependencies = [
  "quote",
  "sp-core-hashing",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -18301,7 +18301,7 @@ version = "8.0.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -18311,7 +18311,7 @@ source = "git+https://github.com/paritytech/polkadot-sdk#82912acb33a9030c0ef3bf5
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -18584,7 +18584,7 @@ dependencies = [
  "proc-macro-crate 2.0.1",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -18596,7 +18596,7 @@ dependencies = [
  "proc-macro-crate 1.3.1",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -18867,7 +18867,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "sp-version",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -19702,9 +19702,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.41"
+version = "2.0.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44c8b28c477cc3bf0e7966561e3460130e1255f7a1cf71931075f1c5e7a7e269"
+checksum = "ee659fb5f3d355364e1f3e5bc10fb82068efbf824a1e9d1c9504244a6469ad53"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -19720,7 +19720,7 @@ dependencies = [
  "paste",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -19971,7 +19971,7 @@ checksum = "266b2e40bc00e5a6c09c3584011e08b06f123c00362c92b975ba9843aaaa14b8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -20132,7 +20132,7 @@ checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -20338,7 +20338,7 @@ checksum = "5f4f31f56159e98206da9efd823404b79b6ef3143b4a7ab76e67b1751b25a4ab"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -20380,7 +20380,7 @@ dependencies = [
  "proc-macro-crate 2.0.1",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
@@ -20910,7 +20910,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
  "wasm-bindgen-shared",
 ]
 
@@ -20944,7 +20944,7 @@ checksum = "54681b18a46765f095758388f2d0cf16eb8d4169b639ab575a8f5693af210c7b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -21912,7 +21912,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "staging-xcm",
- "syn 2.0.41",
+ "syn 2.0.43",
  "trybuild",
 ]
 
@@ -22032,7 +22032,7 @@ checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.43",
 ]
 
 [[package]]
diff --git a/cumulus/pallets/parachain-system/proc-macro/Cargo.toml b/cumulus/pallets/parachain-system/proc-macro/Cargo.toml
index 676f333e06..cdc5514122 100644
--- a/cumulus/pallets/parachain-system/proc-macro/Cargo.toml
+++ b/cumulus/pallets/parachain-system/proc-macro/Cargo.toml
@@ -13,7 +13,7 @@ workspace = true
 proc-macro = true
 
 [dependencies]
-syn = "2.0.41"
+syn = "2.0.43"
 proc-macro2 = "1.0.64"
 quote = "1.0.33"
 proc-macro-crate = "2.0.1"
diff --git a/polkadot/node/gum/proc-macro/Cargo.toml b/polkadot/node/gum/proc-macro/Cargo.toml
index 3f1c2fd647..e9a21914d5 100644
--- a/polkadot/node/gum/proc-macro/Cargo.toml
+++ b/polkadot/node/gum/proc-macro/Cargo.toml
@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro = true
 
 [dependencies]
-syn = { version = "2.0.41", features = ["extra-traits", "full"] }
+syn = { version = "2.0.43", features = ["extra-traits", "full"] }
 quote = "1.0.28"
 proc-macro2 = "1.0.56"
 proc-macro-crate = "2.0.1"
diff --git a/polkadot/xcm/procedural/Cargo.toml b/polkadot/xcm/procedural/Cargo.toml
index c5f837a001..6ebae40f4a 100644
--- a/polkadot/xcm/procedural/Cargo.toml
+++ b/polkadot/xcm/procedural/Cargo.toml
@@ -16,7 +16,7 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.56"
 quote = "1.0.28"
-syn = "2.0.41"
+syn = "2.0.43"
 Inflector = "0.11.4"
 
 [dev-dependencies]
diff --git a/substrate/client/chain-spec/derive/Cargo.toml b/substrate/client/chain-spec/derive/Cargo.toml
index a63520ffb3..b8dcd5e566 100644
--- a/substrate/client/chain-spec/derive/Cargo.toml
+++ b/substrate/client/chain-spec/derive/Cargo.toml
@@ -21,4 +21,4 @@ proc-macro = true
 proc-macro-crate = "2.0.1"
 proc-macro2 = "1.0.56"
 quote = "1.0.28"
-syn = "2.0.41"
+syn = "2.0.43"
diff --git a/substrate/client/tracing/proc-macro/Cargo.toml b/substrate/client/tracing/proc-macro/Cargo.toml
index 3d862a021b..d6fd53fe1d 100644
--- a/substrate/client/tracing/proc-macro/Cargo.toml
+++ b/substrate/client/tracing/proc-macro/Cargo.toml
@@ -21,4 +21,4 @@ proc-macro = true
 proc-macro-crate = "2.0.1"
 proc-macro2 = "1.0.56"
 quote = { version = "1.0.28", features = ["proc-macro"] }
-syn = { version = "2.0.41", features = ["extra-traits", "full", "parsing", "proc-macro"] }
+syn = { version = "2.0.43", features = ["extra-traits", "full", "parsing", "proc-macro"] }
diff --git a/substrate/frame/contracts/proc-macro/Cargo.toml b/substrate/frame/contracts/proc-macro/Cargo.toml
index 972b23c373..1473325646 100644
--- a/substrate/frame/contracts/proc-macro/Cargo.toml
+++ b/substrate/frame/contracts/proc-macro/Cargo.toml
@@ -20,7 +20,7 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.56"
 quote = "1.0.28"
-syn = { version = "2.0.41", features = ["full"] }
+syn = { version = "2.0.43", features = ["full"] }
 
 [dev-dependencies]
 
diff --git a/substrate/frame/election-provider-support/solution-type/Cargo.toml b/substrate/frame/election-provider-support/solution-type/Cargo.toml
index 601355fdb7..212ce2e4f1 100644
--- a/substrate/frame/election-provider-support/solution-type/Cargo.toml
+++ b/substrate/frame/election-provider-support/solution-type/Cargo.toml
@@ -18,7 +18,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro = true
 
 [dependencies]
-syn = { version = "2.0.41", features = ["full", "visit"] }
+syn = { version = "2.0.43", features = ["full", "visit"] }
 quote = "1.0.28"
 proc-macro2 = "1.0.56"
 proc-macro-crate = "2.0.1"
diff --git a/substrate/frame/staking/reward-curve/Cargo.toml b/substrate/frame/staking/reward-curve/Cargo.toml
index c21b79bc2e..fcf2faeee5 100644
--- a/substrate/frame/staking/reward-curve/Cargo.toml
+++ b/substrate/frame/staking/reward-curve/Cargo.toml
@@ -21,7 +21,7 @@ proc-macro = true
 proc-macro-crate = "2.0.1"
 proc-macro2 = "1.0.56"
 quote = "1.0.28"
-syn = { version = "2.0.41", features = ["full", "visit"] }
+syn = { version = "2.0.43", features = ["full", "visit"] }
 
 [dev-dependencies]
 sp-runtime = { path = "../../../primitives/runtime" }
diff --git a/substrate/frame/support/procedural/Cargo.toml b/substrate/frame/support/procedural/Cargo.toml
index dd75f6b4ac..7c8b3f009d 100644
--- a/substrate/frame/support/procedural/Cargo.toml
+++ b/substrate/frame/support/procedural/Cargo.toml
@@ -24,7 +24,7 @@ cfg-expr = "0.15.5"
 itertools = "0.10.3"
 proc-macro2 = "1.0.56"
 quote = "1.0.28"
-syn = { version = "2.0.41", features = ["full"] }
+syn = { version = "2.0.43", features = ["full"] }
 frame-support-procedural-tools = { path = "tools" }
 macro_magic = { version = "0.5.0", features = ["proc_support"] }
 proc-macro-warning = { version = "1.0.0", default-features = false }
diff --git a/substrate/frame/support/procedural/tools/Cargo.toml b/substrate/frame/support/procedural/tools/Cargo.toml
index a5d0f4cc17..4b75088c31 100644
--- a/substrate/frame/support/procedural/tools/Cargo.toml
+++ b/substrate/frame/support/procedural/tools/Cargo.toml
@@ -18,5 +18,5 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro-crate = "2.0.1"
 proc-macro2 = "1.0.56"
 quote = "1.0.28"
-syn = { version = "2.0.41", features = ["extra-traits", "full", "visit"] }
+syn = { version = "2.0.43", features = ["extra-traits", "full", "visit"] }
 frame-support-procedural-tools-derive = { path = "derive" }
diff --git a/substrate/frame/support/procedural/tools/derive/Cargo.toml b/substrate/frame/support/procedural/tools/derive/Cargo.toml
index 0ccb02a332..eeaeab9b82 100644
--- a/substrate/frame/support/procedural/tools/derive/Cargo.toml
+++ b/substrate/frame/support/procedural/tools/derive/Cargo.toml
@@ -20,4 +20,4 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.56"
 quote = { version = "1.0.28", features = ["proc-macro"] }
-syn = { version = "2.0.41", features = ["extra-traits", "full", "parsing", "proc-macro"] }
+syn = { version = "2.0.43", features = ["extra-traits", "full", "parsing", "proc-macro"] }
diff --git a/substrate/primitives/api/proc-macro/Cargo.toml b/substrate/primitives/api/proc-macro/Cargo.toml
index ae46b45ccb..84c93aecd2 100644
--- a/substrate/primitives/api/proc-macro/Cargo.toml
+++ b/substrate/primitives/api/proc-macro/Cargo.toml
@@ -20,7 +20,7 @@ proc-macro = true
 
 [dependencies]
 quote = "1.0.28"
-syn = { version = "2.0.41", features = ["extra-traits", "fold", "full", "visit"] }
+syn = { version = "2.0.43", features = ["extra-traits", "fold", "full", "visit"] }
 proc-macro2 = "1.0.56"
 blake2 = { version = "0.10.4", default-features = false }
 proc-macro-crate = "2.0.1"
diff --git a/substrate/primitives/core/hashing/proc-macro/Cargo.toml b/substrate/primitives/core/hashing/proc-macro/Cargo.toml
index d379fc38ff..1ffbb4d1aa 100644
--- a/substrate/primitives/core/hashing/proc-macro/Cargo.toml
+++ b/substrate/primitives/core/hashing/proc-macro/Cargo.toml
@@ -20,5 +20,5 @@ proc-macro = true
 
 [dependencies]
 quote = "1.0.28"
-syn = { version = "2.0.41", features = ["full", "parsing"] }
+syn = { version = "2.0.43", features = ["full", "parsing"] }
 sp-core-hashing = { path = "..", default-features = false }
diff --git a/substrate/primitives/debug-derive/Cargo.toml b/substrate/primitives/debug-derive/Cargo.toml
index d23e311ee0..bd1e0d12d6 100644
--- a/substrate/primitives/debug-derive/Cargo.toml
+++ b/substrate/primitives/debug-derive/Cargo.toml
@@ -20,7 +20,7 @@ proc-macro = true
 
 [dependencies]
 quote = "1.0.28"
-syn = "2.0.41"
+syn = "2.0.43"
 proc-macro2 = "1.0.56"
 
 [features]
diff --git a/substrate/primitives/runtime-interface/proc-macro/Cargo.toml b/substrate/primitives/runtime-interface/proc-macro/Cargo.toml
index 190ccd51ec..0b0291b1bd 100644
--- a/substrate/primitives/runtime-interface/proc-macro/Cargo.toml
+++ b/substrate/primitives/runtime-interface/proc-macro/Cargo.toml
@@ -24,4 +24,4 @@ proc-macro-crate = "2.0.1"
 proc-macro2 = "1.0.56"
 quote = "1.0.28"
 expander = "2.0.0"
-syn = { version = "2.0.41", features = ["extra-traits", "fold", "full", "visit"] }
+syn = { version = "2.0.43", features = ["extra-traits", "fold", "full", "visit"] }
diff --git a/substrate/primitives/version/proc-macro/Cargo.toml b/substrate/primitives/version/proc-macro/Cargo.toml
index 413a1e9940..a71dce56ee 100644
--- a/substrate/primitives/version/proc-macro/Cargo.toml
+++ b/substrate/primitives/version/proc-macro/Cargo.toml
@@ -22,7 +22,7 @@ proc-macro = true
 codec = { package = "parity-scale-codec", version = "3.6.1", features = ["derive"] }
 proc-macro2 = "1.0.56"
 quote = "1.0.28"
-syn = { version = "2.0.41", features = ["extra-traits", "fold", "full", "visit"] }
+syn = { version = "2.0.43", features = ["extra-traits", "fold", "full", "visit"] }
 
 [dev-dependencies]
 sp-version = { path = ".." }