diff --git a/substrate/Cargo.lock b/substrate/Cargo.lock
index 14d1a547a8..1e75fc0af7 100644
--- a/substrate/Cargo.lock
+++ b/substrate/Cargo.lock
@@ -7318,9 +7318,9 @@ dependencies = [
 
 [[package]]
 name = "pretty_assertions"
-version = "1.0.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0cfe1b2403f172ba0f234e500906ee0a3e493fb81092dac23ebefe129301cc"
+checksum = "c89f989ac94207d048d92db058e4f6ec7342b0971fc58d1271ca148b799b3563"
 dependencies = [
  "ansi_term",
  "ctor",
diff --git a/substrate/frame/support/Cargo.toml b/substrate/frame/support/Cargo.toml
index 712570696b..4132b9f98e 100644
--- a/substrate/frame/support/Cargo.toml
+++ b/substrate/frame/support/Cargo.toml
@@ -39,7 +39,7 @@ k256 = { version = "0.10.4", default-features = false, features = ["ecdsa"] }
 
 [dev-dependencies]
 assert_matches = "1.3.0"
-pretty_assertions = "1.0.0"
+pretty_assertions = "1.2.1"
 frame-system = { version = "4.0.0-dev", path = "../system" }
 parity-util-mem = { version = "0.11.0", default-features = false, features = ["primitive-types"] }
 
diff --git a/substrate/frame/support/test/Cargo.toml b/substrate/frame/support/test/Cargo.toml
index f5f690a046..4aa0ff7d5a 100644
--- a/substrate/frame/support/test/Cargo.toml
+++ b/substrate/frame/support/test/Cargo.toml
@@ -24,7 +24,7 @@ sp-core = { version = "6.0.0", default-features = false, path = "../../../primit
 sp-std = { version = "4.0.0", default-features = false, path = "../../../primitives/std" }
 sp-version = { version = "5.0.0", default-features = false, path = "../../../primitives/version" }
 trybuild = { version = "1.0.60", features = [ "diff" ] }
-pretty_assertions = "1.0.0"
+pretty_assertions = "1.2.1"
 rustversion = "1.0.6"
 frame-system = { version = "4.0.0-dev", default-features = false, path = "../../system" }
 # The "std" feature for this pallet is never activated on purpose, in order to test construct_runtime error message
diff --git a/substrate/primitives/state-machine/Cargo.toml b/substrate/primitives/state-machine/Cargo.toml
index 7ee9fe9887..58fa3be514 100644
--- a/substrate/primitives/state-machine/Cargo.toml
+++ b/substrate/primitives/state-machine/Cargo.toml
@@ -32,7 +32,7 @@ sp-trie = { version = "6.0.0", default-features = false, path = "../trie" }
 
 [dev-dependencies]
 hex-literal = "0.3.4"
-pretty_assertions = "1.0.0"
+pretty_assertions = "1.2.1"
 rand = "0.7.2"
 sp-runtime = { version = "6.0.0", path = "../runtime" }