diff --git a/Cargo.lock b/Cargo.lock
index 0e72e6aabc57..0c279f272379 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -635,7 +635,7 @@ checksum = "0e97ce7de6cf12de5d7226c73f5ba9811622f4db3a5b91b55c53e987e5f91cba"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -646,7 +646,7 @@ checksum = "cc6dde6e4ed435a4c1ee4e73592f5ba9da2151af10076cc04858746af9352d09"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -811,7 +811,7 @@ dependencies = [
  "regex",
  "rustc-hash",
  "shlex",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -1311,7 +1311,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -1870,7 +1870,7 @@ checksum = "83fdaf97f4804dcebfa5862639bc9ce4121e82140bec2a987ac5140294865b5b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -1897,7 +1897,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "scratch",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -1914,7 +1914,7 @@ checksum = "b8fcfa71f66c8563c4fa9dd2bb68368d50267856f831ac5d85367e0805f9606c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -2212,7 +2212,7 @@ checksum = "487585f4d0c6655fe74905e2504d8ad6908e4db67f744eb140876906c2f3175d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -2273,7 +2273,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "regex",
- "syn 2.0.28",
+ "syn 2.0.29",
  "termcolor",
  "toml 0.7.6",
  "walkdir",
@@ -2495,7 +2495,7 @@ checksum = "5e9a1f9f7d83e59740248a6e14ecf93929ade55027844dfcea78beafccc15745"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -2506,7 +2506,7 @@ checksum = "b893c4eb2dc092c811165f84dc7447fae16fb66521717968c34c509b39b1a5c5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -2642,7 +2642,7 @@ dependencies = [
  "fs-err",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -2969,7 +2969,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -3093,7 +3093,7 @@ dependencies = [
  "proc-macro-warning",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -3105,7 +3105,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -3115,7 +3115,7 @@ source = "git+https://github.com/paritytech/substrate?branch=master#51695bb7009e
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -3317,7 +3317,7 @@ checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -5144,7 +5144,7 @@ dependencies = [
  "macro_magic_core",
  "macro_magic_macros",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -5158,7 +5158,7 @@ dependencies = [
  "macro_magic_core_macros",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -5169,7 +5169,7 @@ checksum = "c12469fc165526520dff2807c2975310ab47cf7190a45b99b49a7dc8befab17b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -5180,7 +5180,7 @@ checksum = "b8fb85ec1620619edf2984a7693497d4ec88a9665d8b87e942856884c92dbf2a"
 dependencies = [
  "macro_magic_core",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -6709,7 +6709,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -7173,7 +7173,7 @@ dependencies = [
  "pest_meta",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -7214,7 +7214,7 @@ checksum = "ec2e072ecce94ec471b13398d5402c188e76ac03cf74dd1a975161b23a3f6d9c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -9056,7 +9056,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c64d9ba0963cdcea2e1b2230fbae2bab30eb25a174be395c41e764bfb65dd62"
 dependencies = [
  "proc-macro2",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -9136,7 +9136,7 @@ checksum = "70550716265d1ec349c41f70dd4f964b4fd88394efe4405f0c1da679c4799a07"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -9554,7 +9554,7 @@ checksum = "2dfaf0c85b766276c797f3791f5bc6d5bd116b41d53049af2789666b0c0bc9fa"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -10206,7 +10206,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -11102,7 +11102,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -11395,7 +11395,7 @@ checksum = "24e744d7782b686ab3b73267ef05697159cc0e5abbed3f47f9933165e5219036"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -11461,7 +11461,7 @@ checksum = "91d129178576168c589c9ec973feedf7d3126c01ac2bf08795109aa35b69fb8f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -11763,7 +11763,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -12002,7 +12002,7 @@ source = "git+https://github.com/paritytech/substrate?branch=master#51695bb7009e
 dependencies = [
  "quote",
  "sp-core-hashing",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -12021,7 +12021,7 @@ source = "git+https://github.com/paritytech/substrate?branch=master#51695bb7009e
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -12238,7 +12238,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -12430,7 +12430,7 @@ dependencies = [
  "parity-scale-codec",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -12797,7 +12797,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -12937,9 +12937,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.28"
+version = "2.0.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04361975b3f5e348b2189d8dc55bc942f278b2d482a6a0365de5bdd62d351567"
+checksum = "c324c494eba9d92503e6f1ef2e6df781e78f6a7705a0202d9801b198807d518a"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -13155,7 +13155,7 @@ checksum = "090198534930841fab3a5d1bb637cde49e339654e606195f8d9c76eeb081dc96"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -13347,7 +13347,7 @@ checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -13526,7 +13526,7 @@ checksum = "5f4f31f56159e98206da9efd823404b79b6ef3143b4a7ab76e67b1751b25a4ab"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -13569,7 +13569,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -14087,7 +14087,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
  "wasm-bindgen-shared",
 ]
 
@@ -14121,7 +14121,7 @@ checksum = "54681b18a46765f095758388f2d0cf16eb8d4169b639ab575a8f5693af210c7b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -15193,7 +15193,7 @@ dependencies = [
  "Inflector",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
@@ -15312,7 +15312,7 @@ checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.29",
 ]
 
 [[package]]
diff --git a/node/gum/proc-macro/Cargo.toml b/node/gum/proc-macro/Cargo.toml
index e7262008499b..a3571c598987 100644
--- a/node/gum/proc-macro/Cargo.toml
+++ b/node/gum/proc-macro/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro = true
 
 [dependencies]
-syn = { version = "2.0.15", features = ["full", "extra-traits"] }
+syn = { version = "2.0.29", features = ["full", "extra-traits"] }
 quote = "1.0.28"
 proc-macro2 = "1.0.56"
 proc-macro-crate = "1.1.3"
diff --git a/xcm/procedural/Cargo.toml b/xcm/procedural/Cargo.toml
index a821a73669e0..31deb0c1acb8 100644
--- a/xcm/procedural/Cargo.toml
+++ b/xcm/procedural/Cargo.toml
@@ -11,5 +11,5 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.56"
 quote = "1.0.28"
-syn = "2.0.15"
+syn = "2.0.29"
 Inflector = "0.11.4"