diff --git a/substrate/Cargo.lock b/substrate/Cargo.lock
index b7e22d9d2c..10375d5024 100644
--- a/substrate/Cargo.lock
+++ b/substrate/Cargo.lock
@@ -6367,9 +6367,9 @@ checksum = "bc881b2c22681370c6a780e47af9840ef841837bc98118431d4e1868bd0c1086"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.26"
+version = "1.0.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a152013215dca273577e18d2bf00fa862b89b24169fb78c4c95aeb07992c9cec"
+checksum = "5c7ed8b8c7b886ea3ed7dde405212185f423ab44682667c8c6dd14aa1d9f6612"
 dependencies = [
  "unicode-xid",
 ]
diff --git a/substrate/client/chain-spec/derive/Cargo.toml b/substrate/client/chain-spec/derive/Cargo.toml
index 6823c139db..9fd4d34587 100644
--- a/substrate/client/chain-spec/derive/Cargo.toml
+++ b/substrate/client/chain-spec/derive/Cargo.toml
@@ -16,7 +16,7 @@ proc-macro = true
 
 [dependencies]
 proc-macro-crate = "1.0.0"
-proc-macro2 = "1.0.6"
+proc-macro2 = "1.0.28"
 quote = "1.0.3"
 syn = "1.0.58"
 
diff --git a/substrate/client/tracing/proc-macro/Cargo.toml b/substrate/client/tracing/proc-macro/Cargo.toml
index fbde99a1a2..f88baad132 100644
--- a/substrate/client/tracing/proc-macro/Cargo.toml
+++ b/substrate/client/tracing/proc-macro/Cargo.toml
@@ -16,6 +16,6 @@ proc-macro = true
 
 [dependencies]
 proc-macro-crate = "1.0.0"
-proc-macro2 = "1.0.6"
+proc-macro2 = "1.0.28"
 quote = { version = "1.0.3", features = ["proc-macro"] }
 syn = { version = "1.0.58", 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 3b4b9db452..035bc0a59c 100644
--- a/substrate/frame/staking/reward-curve/Cargo.toml
+++ b/substrate/frame/staking/reward-curve/Cargo.toml
@@ -17,7 +17,7 @@ proc-macro = true
 [dependencies]
 syn = { version = "1.0.58", features = ["full", "visit"] }
 quote = "1.0.3"
-proc-macro2 = "1.0.6"
+proc-macro2 = "1.0.28"
 proc-macro-crate = "1.0.0"
 
 [dev-dependencies]
diff --git a/substrate/frame/support/procedural/Cargo.toml b/substrate/frame/support/procedural/Cargo.toml
index ba71a7d12c..df57ccf228 100644
--- a/substrate/frame/support/procedural/Cargo.toml
+++ b/substrate/frame/support/procedural/Cargo.toml
@@ -16,7 +16,7 @@ proc-macro = true
 
 [dependencies]
 frame-support-procedural-tools = { version = "4.0.0-dev", path = "./tools" }
-proc-macro2 = "1.0.6"
+proc-macro2 = "1.0.28"
 quote = "1.0.3"
 Inflector = "0.11.4"
 syn = { version = "1.0.58", features = ["full"] }
diff --git a/substrate/frame/support/procedural/tools/Cargo.toml b/substrate/frame/support/procedural/tools/Cargo.toml
index 2ff49f96e4..83b896acc8 100644
--- a/substrate/frame/support/procedural/tools/Cargo.toml
+++ b/substrate/frame/support/procedural/tools/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 frame-support-procedural-tools-derive = { version = "3.0.0", path = "./derive" }
-proc-macro2 = "1.0.6"
+proc-macro2 = "1.0.28"
 quote = "1.0.3"
 syn = { version = "1.0.58", features = ["full", "visit"] }
 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 c377680af1..349bbc8e82 100644
--- a/substrate/frame/support/procedural/tools/derive/Cargo.toml
+++ b/substrate/frame/support/procedural/tools/derive/Cargo.toml
@@ -15,6 +15,6 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro = true
 
 [dependencies]
-proc-macro2 = "1.0.6"
+proc-macro2 = "1.0.28"
 quote = { version = "1.0.3", features = ["proc-macro"] }
 syn = { version = "1.0.58", 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 2c47554aef..045c848a2c 100644
--- a/substrate/primitives/api/proc-macro/Cargo.toml
+++ b/substrate/primitives/api/proc-macro/Cargo.toml
@@ -18,7 +18,7 @@ proc-macro = true
 [dependencies]
 quote = "1.0.3"
 syn = { version = "1.0.58", features = ["full", "fold", "extra-traits", "visit"] }
-proc-macro2 = "1.0.6"
+proc-macro2 = "1.0.28"
 blake2-rfc = { version = "0.2.18", default-features = false }
 proc-macro-crate = "1.0.0"
 
diff --git a/substrate/primitives/npos-elections/compact/Cargo.toml b/substrate/primitives/npos-elections/compact/Cargo.toml
index 2e8bd0e953..d90bdf373b 100644
--- a/substrate/primitives/npos-elections/compact/Cargo.toml
+++ b/substrate/primitives/npos-elections/compact/Cargo.toml
@@ -17,7 +17,7 @@ proc-macro = true
 [dependencies]
 syn = { version = "1.0.58", features = ["full", "visit"] }
 quote = "1.0"
-proc-macro2 = "1.0.6"
+proc-macro2 = "1.0.28"
 proc-macro-crate = "1.0.0"
 
 [dev-dependencies]
diff --git a/substrate/primitives/runtime-interface/proc-macro/Cargo.toml b/substrate/primitives/runtime-interface/proc-macro/Cargo.toml
index dcf8a4662b..869154e43f 100644
--- a/substrate/primitives/runtime-interface/proc-macro/Cargo.toml
+++ b/substrate/primitives/runtime-interface/proc-macro/Cargo.toml
@@ -18,6 +18,6 @@ proc-macro = true
 [dependencies]
 syn = { version = "1.0.58", features = ["full", "visit", "fold", "extra-traits"] }
 quote = "1.0.3"
-proc-macro2 = "1.0.3"
+proc-macro2 = "1.0.28"
 Inflector = "0.11.4"
 proc-macro-crate = "1.0.0"
diff --git a/substrate/primitives/version/proc-macro/Cargo.toml b/substrate/primitives/version/proc-macro/Cargo.toml
index e394353e52..e27d26acc9 100644
--- a/substrate/primitives/version/proc-macro/Cargo.toml
+++ b/substrate/primitives/version/proc-macro/Cargo.toml
@@ -18,7 +18,7 @@ proc-macro = true
 [dependencies]
 quote = "1.0.3"
 syn = { version = "1.0.58", features = ["full", "fold", "extra-traits", "visit"] }
-proc-macro2 = "1.0.6"
+proc-macro2 = "1.0.28"
 proc-macro-crate = "1.0.0"
 codec = { package = "parity-scale-codec", version = "2.0.0", features = [ "derive" ] }