diff --git a/polkadot/Cargo.lock b/polkadot/Cargo.lock
index a6cf48f9ff..3557d7679c 100644
--- a/polkadot/Cargo.lock
+++ b/polkadot/Cargo.lock
@@ -4343,9 +4343,9 @@ dependencies = [
 
 [[package]]
 name = "nix"
-version = "0.23.0"
+version = "0.23.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f305c2c2e4c39a82f7bf0bf65fb557f9070ce06781d4f2454295cc34b1c43188"
+checksum = "9f866317acbd3a240710c63f065ffb1e4fd466259045ccb504130b7f668f35c6"
 dependencies = [
  "bitflags",
  "cc",
diff --git a/polkadot/Cargo.toml b/polkadot/Cargo.toml
index 4db5d6e544..a88c72f7ca 100644
--- a/polkadot/Cargo.toml
+++ b/polkadot/Cargo.toml
@@ -18,7 +18,7 @@ parity-util-mem = { version = "*", default-features = false, features = ["jemall
 
 [dev-dependencies]
 assert_cmd = "2.0.2"
-nix = "0.23.0"
+nix = "0.23.1"
 tempfile = "3.2.0"
 
 [workspace]
diff --git a/polkadot/node/metrics/Cargo.toml b/polkadot/node/metrics/Cargo.toml
index a4cc215afe..5cc819f9b1 100644
--- a/polkadot/node/metrics/Cargo.toml
+++ b/polkadot/node/metrics/Cargo.toml
@@ -25,7 +25,7 @@ log = "0.4.13"
 
 [dev-dependencies]
 assert_cmd = "2.0.2"
-nix = "0.23.0"
+nix = "0.23.1"
 tempfile = "3.2.0"
 hyper = { version = "0.14.14", default-features = false, features = ["http1", "tcp"] }
 tokio = "1.13"