diff --git a/Cargo.lock b/Cargo.lock
index f387b5ef95227..4d07caec7addb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -583,7 +583,7 @@ checksum = "0e97ce7de6cf12de5d7226c73f5ba9811622f4db3a5b91b55c53e987e5f91cba"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -605,7 +605,7 @@ checksum = "16e62a023e7c117e27523144c5d2459f4397fcc3cab0085af8e2224f643a0193"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -616,7 +616,7 @@ checksum = "b9ccdd8f2a161be9bd5c023df56f1b2a0bd1d83872ae53b71a84a12c9bf6e842"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -763,7 +763,7 @@ dependencies = [
  "regex",
  "rustc-hash",
  "shlex",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -1253,7 +1253,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -1738,7 +1738,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "scratch",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -1755,7 +1755,7 @@ checksum = "2345488264226bf682893e25de0769f3360aac9957980ec49361b083ddaa5bc5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -2023,7 +2023,7 @@ checksum = "487585f4d0c6655fe74905e2504d8ad6908e4db67f744eb140876906c2f3175d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -2227,7 +2227,7 @@ checksum = "5e9a1f9f7d83e59740248a6e14ecf93929ade55027844dfcea78beafccc15745"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -2581,7 +2581,7 @@ dependencies = [
  "quote",
  "scale-info",
  "sp-arithmetic",
- "syn 2.0.15",
+ "syn 2.0.16",
  "trybuild",
 ]
 
@@ -2725,7 +2725,7 @@ dependencies = [
  "proc-macro-warning",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -2736,7 +2736,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -2745,7 +2745,7 @@ version = "3.0.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -2963,7 +2963,7 @@ checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -6226,7 +6226,7 @@ version = "4.0.0-dev"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -7169,7 +7169,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "sp-runtime",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -7649,7 +7649,7 @@ dependencies = [
  "pest_meta",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -7920,7 +7920,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ceca8aaf45b5c46ec7ed39fff75f57290368c1846d33d24a122ca81416ab058"
 dependencies = [
  "proc-macro2",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -7978,7 +7978,7 @@ checksum = "0e99670bafb56b9a106419397343bdbc8b8742c3cc449fec6345f86173f47cd4"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -8360,7 +8360,7 @@ checksum = "8d2275aab483050ab2a7364c1a46604865ee7d6906684e08db0f090acf74f9e7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -8823,7 +8823,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -10096,7 +10096,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -10398,7 +10398,7 @@ checksum = "a2a0814352fd64b58489904a44ea8d90cb1a91dcb6b4f5ebabc32c8318e93cb6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -10656,7 +10656,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -10953,7 +10953,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "sp-core-hashing",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -10970,7 +10970,7 @@ version = "5.0.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -11198,7 +11198,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -11434,7 +11434,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "sp-version",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -11877,7 +11877,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -11933,9 +11933,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.15"
+version = "2.0.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a34fcf3e8b60f57e6a14301a2e916d323af98b0ea63c599441eec8558660c822"
+checksum = "a6f671d4b5ffdb8eadec19c0ae67fe2639df8684bd7bc4b83d986b8db549cf01"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -12049,7 +12049,7 @@ checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -12205,7 +12205,7 @@ checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -12375,7 +12375,7 @@ checksum = "0f57e3ca2a01450b1a921183a9c9cbfda207fd822cef4ccb00a65402cbba7a74"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
@@ -12905,7 +12905,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
  "wasm-bindgen-shared",
 ]
 
@@ -12939,7 +12939,7 @@ checksum = "4783ce29f09b9d93134d41297aded3a712b7b979e9c6f28c32cb88c973a94869"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -13961,7 +13961,7 @@ checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.16",
 ]
 
 [[package]]
diff --git a/client/chain-spec/derive/Cargo.toml b/client/chain-spec/derive/Cargo.toml
index c16cd45a99433..ff686857e5077 100644
--- a/client/chain-spec/derive/Cargo.toml
+++ b/client/chain-spec/derive/Cargo.toml
@@ -18,4 +18,4 @@ proc-macro = true
 proc-macro-crate = "1.1.3"
 proc-macro2 = "1.0.56"
 quote = "1.0.26"
-syn = "2.0.14"
+syn = "2.0.16"
diff --git a/client/tracing/proc-macro/Cargo.toml b/client/tracing/proc-macro/Cargo.toml
index 54078fe1f2cae..c602df73f078d 100644
--- a/client/tracing/proc-macro/Cargo.toml
+++ b/client/tracing/proc-macro/Cargo.toml
@@ -18,4 +18,4 @@ proc-macro = true
 proc-macro-crate = "1.1.3"
 proc-macro2 = "1.0.56"
 quote = { version = "1.0.26", features = ["proc-macro"] }
-syn = { version = "2.0.14", features = ["proc-macro", "full", "extra-traits", "parsing"] }
+syn = { version = "2.0.16", features = ["proc-macro", "full", "extra-traits", "parsing"] }
diff --git a/frame/contracts/proc-macro/Cargo.toml b/frame/contracts/proc-macro/Cargo.toml
index c700d1e335639..b8d80420b3cfe 100644
--- a/frame/contracts/proc-macro/Cargo.toml
+++ b/frame/contracts/proc-macro/Cargo.toml
@@ -17,7 +17,7 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.56"
 quote = "1.0.26"
-syn = { version = "2.0.14", features = ["full"] }
+syn = { version = "2.0.16", features = ["full"] }
 
 [dev-dependencies]
 
diff --git a/frame/election-provider-support/solution-type/Cargo.toml b/frame/election-provider-support/solution-type/Cargo.toml
index 95ad6f226663b..ebe63ab463745 100644
--- a/frame/election-provider-support/solution-type/Cargo.toml
+++ b/frame/election-provider-support/solution-type/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro = true
 
 [dependencies]
-syn = { version = "2.0.14", features = ["full", "visit"] }
+syn = { version = "2.0.16", features = ["full", "visit"] }
 quote = "1.0.26"
 proc-macro2 = "1.0.56"
 proc-macro-crate = "1.1.3"
diff --git a/frame/staking/reward-curve/Cargo.toml b/frame/staking/reward-curve/Cargo.toml
index 4a97d20a5f0af..6cd6323acbd1c 100644
--- a/frame/staking/reward-curve/Cargo.toml
+++ b/frame/staking/reward-curve/Cargo.toml
@@ -18,7 +18,7 @@ proc-macro = true
 proc-macro-crate = "1.1.3"
 proc-macro2 = "1.0.56"
 quote = "1.0.26"
-syn = { version = "2.0.14", features = ["full", "visit"] }
+syn = { version = "2.0.16", features = ["full", "visit"] }
 
 [dev-dependencies]
 sp-runtime = { version = "7.0.0", path = "../../../primitives/runtime" }
diff --git a/frame/support/procedural/Cargo.toml b/frame/support/procedural/Cargo.toml
index 8e18376ba3288..e6fe140b516a1 100644
--- a/frame/support/procedural/Cargo.toml
+++ b/frame/support/procedural/Cargo.toml
@@ -21,7 +21,7 @@ cfg-expr = "0.15.1"
 itertools = "0.10.3"
 proc-macro2 = "1.0.56"
 quote = "1.0.26"
-syn = { version = "2.0.14", features = ["full"] }
+syn = { version = "2.0.16", features = ["full"] }
 frame-support-procedural-tools = { version = "4.0.0-dev", path = "./tools" }
 proc-macro-warning = { version = "0.3.0", default-features = false }
 
diff --git a/frame/support/procedural/tools/Cargo.toml b/frame/support/procedural/tools/Cargo.toml
index bf828b01b6f76..4eeedbdd5cffc 100644
--- a/frame/support/procedural/tools/Cargo.toml
+++ b/frame/support/procedural/tools/Cargo.toml
@@ -15,5 +15,5 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro-crate = "1.1.3"
 proc-macro2 = "1.0.56"
 quote = "1.0.26"
-syn = { version = "2.0.14", features = ["full", "visit", "extra-traits"] }
+syn = { version = "2.0.16", features = ["full", "visit", "extra-traits"] }
 frame-support-procedural-tools-derive = { version = "3.0.0", path = "./derive" }
diff --git a/frame/support/procedural/tools/derive/Cargo.toml b/frame/support/procedural/tools/derive/Cargo.toml
index 81b5a8487449b..425b4bf2dea45 100644
--- a/frame/support/procedural/tools/derive/Cargo.toml
+++ b/frame/support/procedural/tools/derive/Cargo.toml
@@ -17,4 +17,4 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.56"
 quote = { version = "1.0.26", features = ["proc-macro"] }
-syn = { version = "2.0.14", features = ["proc-macro", "full", "extra-traits", "parsing"] }
+syn = { version = "2.0.16", features = ["proc-macro", "full", "extra-traits", "parsing"] }
diff --git a/primitives/api/proc-macro/Cargo.toml b/primitives/api/proc-macro/Cargo.toml
index 9d721950f90be..d23007626e7c7 100644
--- a/primitives/api/proc-macro/Cargo.toml
+++ b/primitives/api/proc-macro/Cargo.toml
@@ -17,7 +17,7 @@ proc-macro = true
 
 [dependencies]
 quote = "1.0.26"
-syn = { version = "2.0.14", features = ["full", "fold", "extra-traits", "visit"] }
+syn = { version = "2.0.16", features = ["full", "fold", "extra-traits", "visit"] }
 proc-macro2 = "1.0.56"
 blake2 = { version = "0.10.4", default-features = false }
 proc-macro-crate = "1.1.3"
diff --git a/primitives/core/hashing/proc-macro/Cargo.toml b/primitives/core/hashing/proc-macro/Cargo.toml
index 66e9667c8468c..5a80332041203 100644
--- a/primitives/core/hashing/proc-macro/Cargo.toml
+++ b/primitives/core/hashing/proc-macro/Cargo.toml
@@ -18,5 +18,5 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.56"
 quote = "1.0.26"
-syn = { version = "2.0.14", features = ["full", "parsing"] }
+syn = { version = "2.0.16", features = ["full", "parsing"] }
 sp-core-hashing = { version = "5.0.0", default-features = false, path = "../" }
diff --git a/primitives/debug-derive/Cargo.toml b/primitives/debug-derive/Cargo.toml
index 183d7bd5a7720..f7ca95b19589b 100644
--- a/primitives/debug-derive/Cargo.toml
+++ b/primitives/debug-derive/Cargo.toml
@@ -18,7 +18,7 @@ proc-macro = true
 
 [dependencies]
 quote = "1.0.26"
-syn = "2.0.14"
+syn = "2.0.16"
 proc-macro2 = "1.0.56"
 
 [features]
diff --git a/primitives/runtime-interface/proc-macro/Cargo.toml b/primitives/runtime-interface/proc-macro/Cargo.toml
index 3a63c1ef55dab..3f1a18ee83afa 100644
--- a/primitives/runtime-interface/proc-macro/Cargo.toml
+++ b/primitives/runtime-interface/proc-macro/Cargo.toml
@@ -20,4 +20,4 @@ Inflector = "0.11.4"
 proc-macro-crate = "1.1.3"
 proc-macro2 = "1.0.56"
 quote = "1.0.26"
-syn = { version = "2.0.14", features = ["full", "visit", "fold", "extra-traits"] }
+syn = { version = "2.0.16", features = ["full", "visit", "fold", "extra-traits"] }
diff --git a/primitives/version/proc-macro/Cargo.toml b/primitives/version/proc-macro/Cargo.toml
index aac41dd43dd08..50095bd715daf 100644
--- a/primitives/version/proc-macro/Cargo.toml
+++ b/primitives/version/proc-macro/Cargo.toml
@@ -19,7 +19,7 @@ proc-macro = true
 codec = { package = "parity-scale-codec", version = "3.2.2", features = [ "derive" ] }
 proc-macro2 = "1.0.56"
 quote = "1.0.26"
-syn = { version = "2.0.14", features = ["full", "fold", "extra-traits", "visit"] }
+syn = { version = "2.0.16", features = ["full", "fold", "extra-traits", "visit"] }
 
 [dev-dependencies]
 sp-version = { version = "5.0.0", path = ".." }
diff --git a/test-utils/derive/Cargo.toml b/test-utils/derive/Cargo.toml
index f3e38ada2b30d..da357e2cb7f63 100644
--- a/test-utils/derive/Cargo.toml
+++ b/test-utils/derive/Cargo.toml
@@ -13,7 +13,7 @@ publish = false
 proc-macro-crate = "1.1.3"
 proc-macro2 = "1.0.56"
 quote = "1.0.26"
-syn = { version = "2.0.14", features = ["full"] }
+syn = { version = "2.0.16", features = ["full"] }
 
 [lib]
 proc-macro = true