diff --git a/substrate/Cargo.lock b/substrate/Cargo.lock
index 2257fa0a5b..8d168230b5 100644
--- a/substrate/Cargo.lock
+++ b/substrate/Cargo.lock
@@ -6780,9 +6780,9 @@ checksum = "bc881b2c22681370c6a780e47af9840ef841837bc98118431d4e1868bd0c1086"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.29"
+version = "1.0.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9f5105d4fdaab20335ca9565e106a5d9b82b6219b5ba735731124ac6711d23d"
+checksum = "ba508cc11742c0dc5c1659771673afbab7a0efab23aa17e854cbab0837ed0b43"
 dependencies = [
  "unicode-xid",
 ]
@@ -10286,9 +10286,9 @@ checksum = "1e81da0851ada1f3e9d4312c704aa4f8806f0f9d69faaf8df2f3464b4a9437c2"
 
 [[package]]
 name = "syn"
-version = "1.0.80"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d010a1623fbd906d51d650a9916aaefc05ffa0e4053ff7fe601167f3e715d194"
+checksum = "f2afee18b8beb5a596ecb4a2dce128c719b4ba399d34126b9e4396e3f9860966"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/substrate/client/chain-spec/derive/Cargo.toml b/substrate/client/chain-spec/derive/Cargo.toml
index 386137d066..25339eea14 100644
--- a/substrate/client/chain-spec/derive/Cargo.toml
+++ b/substrate/client/chain-spec/derive/Cargo.toml
@@ -18,6 +18,6 @@ proc-macro = true
 proc-macro-crate = "1.0.0"
 proc-macro2 = "1.0.29"
 quote = "1.0.10"
-syn = "1.0.80"
+syn = "1.0.81"
 
 [dev-dependencies]
diff --git a/substrate/client/tracing/proc-macro/Cargo.toml b/substrate/client/tracing/proc-macro/Cargo.toml
index 9c8579ee66..c51c8764e6 100644
--- a/substrate/client/tracing/proc-macro/Cargo.toml
+++ b/substrate/client/tracing/proc-macro/Cargo.toml
@@ -18,4 +18,4 @@ proc-macro = true
 proc-macro-crate = "1.0.0"
 proc-macro2 = "1.0.29"
 quote = { version = "1.0.10", features = ["proc-macro"] }
-syn = { version = "1.0.80", features = ["proc-macro", "full", "extra-traits", "parsing"] }
+syn = { version = "1.0.81", features = ["proc-macro", "full", "extra-traits", "parsing"] }
diff --git a/substrate/frame/staking/reward-curve/Cargo.toml b/substrate/frame/staking/reward-curve/Cargo.toml
index 15ff3a8727..1250bbcd39 100644
--- a/substrate/frame/staking/reward-curve/Cargo.toml
+++ b/substrate/frame/staking/reward-curve/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro = true
 
 [dependencies]
-syn = { version = "1.0.80", features = ["full", "visit"] }
+syn = { version = "1.0.81", features = ["full", "visit"] }
 quote = "1.0.10"
 proc-macro2 = "1.0.29"
 proc-macro-crate = "1.0.0"
diff --git a/substrate/frame/support/procedural/Cargo.toml b/substrate/frame/support/procedural/Cargo.toml
index 1712838887..b47cf7f979 100644
--- a/substrate/frame/support/procedural/Cargo.toml
+++ b/substrate/frame/support/procedural/Cargo.toml
@@ -19,7 +19,7 @@ frame-support-procedural-tools = { version = "4.0.0-dev", path = "./tools" }
 proc-macro2 = "1.0.29"
 quote = "1.0.10"
 Inflector = "0.11.4"
-syn = { version = "1.0.80", features = ["full"] }
+syn = { version = "1.0.81", features = ["full"] }
 
 [features]
 default = ["std"]
diff --git a/substrate/frame/support/procedural/tools/Cargo.toml b/substrate/frame/support/procedural/tools/Cargo.toml
index 1207d06e6d..7b957be184 100644
--- a/substrate/frame/support/procedural/tools/Cargo.toml
+++ b/substrate/frame/support/procedural/tools/Cargo.toml
@@ -15,5 +15,5 @@ targets = ["x86_64-unknown-linux-gnu"]
 frame-support-procedural-tools-derive = { version = "3.0.0", path = "./derive" }
 proc-macro2 = "1.0.29"
 quote = "1.0.10"
-syn = { version = "1.0.80", features = ["full", "visit", "extra-traits"] }
+syn = { version = "1.0.81", features = ["full", "visit", "extra-traits"] }
 proc-macro-crate = "1.0.0"
diff --git a/substrate/frame/support/procedural/tools/derive/Cargo.toml b/substrate/frame/support/procedural/tools/derive/Cargo.toml
index f0c27b5397..8327134b3f 100644
--- a/substrate/frame/support/procedural/tools/derive/Cargo.toml
+++ b/substrate/frame/support/procedural/tools/derive/Cargo.toml
@@ -17,4 +17,4 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.29"
 quote = { version = "1.0.10", features = ["proc-macro"] }
-syn = { version = "1.0.80", features = ["proc-macro" ,"full", "extra-traits", "parsing"] }
+syn = { version = "1.0.81", features = ["proc-macro" ,"full", "extra-traits", "parsing"] }
diff --git a/substrate/primitives/api/proc-macro/Cargo.toml b/substrate/primitives/api/proc-macro/Cargo.toml
index 7b0b55c8c3..a5df7aef32 100644
--- a/substrate/primitives/api/proc-macro/Cargo.toml
+++ b/substrate/primitives/api/proc-macro/Cargo.toml
@@ -17,7 +17,7 @@ proc-macro = true
 
 [dependencies]
 quote = "1.0.10"
-syn = { version = "1.0.80", features = ["full", "fold", "extra-traits", "visit"] }
+syn = { version = "1.0.81", features = ["full", "fold", "extra-traits", "visit"] }
 proc-macro2 = "1.0.29"
 blake2-rfc = { version = "0.2.18", default-features = false }
 proc-macro-crate = "1.0.0"
diff --git a/substrate/primitives/core/hashing/proc-macro/Cargo.toml b/substrate/primitives/core/hashing/proc-macro/Cargo.toml
index 452165b31c..89b225e6aa 100644
--- a/substrate/primitives/core/hashing/proc-macro/Cargo.toml
+++ b/substrate/primitives/core/hashing/proc-macro/Cargo.toml
@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro = true
 
 [dependencies]
-syn = { version = "1.0.77", features = ["full", "parsing"] }
+syn = { version = "1.0.81", features = ["full", "parsing"] }
 quote = "1.0.6"
 proc-macro2 = "1.0.29"
 sp-core-hashing = { version = "4.0.0-dev", path = "../", default-features = false }
diff --git a/substrate/primitives/debug-derive/Cargo.toml b/substrate/primitives/debug-derive/Cargo.toml
index d1f1f81a9f..a2f77b7591 100644
--- a/substrate/primitives/debug-derive/Cargo.toml
+++ b/substrate/primitives/debug-derive/Cargo.toml
@@ -18,7 +18,7 @@ proc-macro = true
 
 [dependencies]
 quote = "1.0.10"
-syn = "1.0.80"
+syn = "1.0.81"
 proc-macro2 = "1.0"
 
 [features]
diff --git a/substrate/primitives/npos-elections/solution-type/Cargo.toml b/substrate/primitives/npos-elections/solution-type/Cargo.toml
index f50150bdbd..5d8d389057 100644
--- a/substrate/primitives/npos-elections/solution-type/Cargo.toml
+++ b/substrate/primitives/npos-elections/solution-type/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro = true
 
 [dependencies]
-syn = { version = "1.0.80", features = ["full", "visit"] }
+syn = { version = "1.0.81", features = ["full", "visit"] }
 quote = "1.0"
 proc-macro2 = "1.0.29"
 proc-macro-crate = "1.0.0"
diff --git a/substrate/primitives/runtime-interface/proc-macro/Cargo.toml b/substrate/primitives/runtime-interface/proc-macro/Cargo.toml
index 958a95ceb3..cc5daa695b 100644
--- a/substrate/primitives/runtime-interface/proc-macro/Cargo.toml
+++ b/substrate/primitives/runtime-interface/proc-macro/Cargo.toml
@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro = true
 
 [dependencies]
-syn = { version = "1.0.80", features = ["full", "visit", "fold", "extra-traits"] }
+syn = { version = "1.0.81", features = ["full", "visit", "fold", "extra-traits"] }
 quote = "1.0.10"
 proc-macro2 = "1.0.29"
 Inflector = "0.11.4"
diff --git a/substrate/primitives/version/proc-macro/Cargo.toml b/substrate/primitives/version/proc-macro/Cargo.toml
index bf6e0bdec7..79fb9b18a2 100644
--- a/substrate/primitives/version/proc-macro/Cargo.toml
+++ b/substrate/primitives/version/proc-macro/Cargo.toml
@@ -17,7 +17,7 @@ proc-macro = true
 
 [dependencies]
 quote = "1.0.10"
-syn = { version = "1.0.80", features = ["full", "fold", "extra-traits", "visit"] }
+syn = { version = "1.0.81", features = ["full", "fold", "extra-traits", "visit"] }
 proc-macro2 = "1.0.29"
 codec = { package = "parity-scale-codec", version = "2.0.0", features = [ "derive" ] }
 
diff --git a/substrate/test-utils/derive/Cargo.toml b/substrate/test-utils/derive/Cargo.toml
index f195c0e419..967fc1e87a 100644
--- a/substrate/test-utils/derive/Cargo.toml
+++ b/substrate/test-utils/derive/Cargo.toml
@@ -10,7 +10,7 @@ description = "Substrate test utilities macros"
 
 [dependencies]
 quote = "1.0.10"
-syn = { version = "1.0.80", features = ["full"] }
+syn = { version = "1.0.81", features = ["full"] }
 proc-macro-crate = "1.0.0"
 proc-macro2 = "1.0.29"