diff --git a/Cargo.lock b/Cargo.lock
index 20a12c70894d..9381afc45219 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -370,7 +370,7 @@ checksum = "b9ccdd8f2a161be9bd5c023df56f1b2a0bd1d83872ae53b71a84a12c9bf6e842"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -2153,7 +2153,7 @@ dependencies = [
  "fs-err",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -2477,7 +2477,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -2588,7 +2588,7 @@ dependencies = [
  "proc-macro-warning",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -2600,7 +2600,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -2610,7 +2610,7 @@ source = "git+https://github.com/paritytech/substrate?branch=master#50de15d8740a
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -2814,7 +2814,7 @@ checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -6015,7 +6015,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -9285,7 +9285,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -10232,7 +10232,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -10525,7 +10525,7 @@ checksum = "e801c1712f48475582b7696ac71e0ca34ebb30e09338425384269d9717c62cad"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -10855,7 +10855,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -11096,7 +11096,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "sp-core-hashing",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -11115,7 +11115,7 @@ source = "git+https://github.com/paritytech/substrate?branch=master#50de15d8740a
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -11326,7 +11326,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -11493,7 +11493,7 @@ dependencies = [
  "parity-scale-codec",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -11855,7 +11855,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -11935,9 +11935,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.14"
+version = "2.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcf316d5356ed6847742d036f8a39c3b8435cac10bd528a4bd461928a6ab34d5"
+checksum = "a34fcf3e8b60f57e6a14301a2e916d323af98b0ea63c599441eec8558660c822"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -12152,7 +12152,7 @@ checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -12553,7 +12553,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -14130,7 +14130,7 @@ dependencies = [
  "Inflector",
  "proc-macro2",
  "quote",
- "syn 2.0.14",
+ "syn 2.0.15",
 ]
 
 [[package]]
diff --git a/node/gum/proc-macro/Cargo.toml b/node/gum/proc-macro/Cargo.toml
index 36f3c3b7f646..3fac1a7b928f 100644
--- a/node/gum/proc-macro/Cargo.toml
+++ b/node/gum/proc-macro/Cargo.toml
@@ -12,7 +12,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro = true
 
 [dependencies]
-syn = { version = "2.0.14", features = ["full", "extra-traits"] }
+syn = { version = "2.0.15", features = ["full", "extra-traits"] }
 quote = "1.0.26"
 proc-macro2 = "1.0.56"
 proc-macro-crate = "1.1.3"
diff --git a/xcm/procedural/Cargo.toml b/xcm/procedural/Cargo.toml
index b2790d941b12..4da7ac1e2223 100644
--- a/xcm/procedural/Cargo.toml
+++ b/xcm/procedural/Cargo.toml
@@ -10,5 +10,5 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.56"
 quote = "1.0.26"
-syn = "2.0.14"
+syn = "2.0.15"
 Inflector = "0.11.4"