diff --git a/Cargo.lock b/Cargo.lock
index 014cc268b0b..8b2b8c9328c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3739,9 +3739,9 @@ dependencies = [
 
 [[package]]
 name = "prometheus-client"
-version = "0.19.0"
+version = "0.21.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d6fa99d535dd930d1249e6c79cb3c2915f9172a540fe2b02a4c8f9ca954721e"
+checksum = "78c2f43e8969d51935d2a7284878ae053ba30034cd563f673cde37ba5205685e"
 dependencies = [
  "dtoa",
  "itoa",
diff --git a/misc/metrics/Cargo.toml b/misc/metrics/Cargo.toml
index e51dd368cf5..b113bfb749c 100644
--- a/misc/metrics/Cargo.toml
+++ b/misc/metrics/Cargo.toml
@@ -26,7 +26,7 @@ libp2p-kad = { version = "0.43.0", path = "../../protocols/kad", optional = true
 libp2p-ping = { version = "0.42.0", path = "../../protocols/ping", optional = true }
 libp2p-relay =  { version = "0.15.0", path = "../../protocols/relay", optional = true }
 libp2p-swarm = { version = "0.42.0", path = "../../swarm" }
-prometheus-client = "0.19.0"
+prometheus-client = "0.21.1"
 
 [target.'cfg(not(target_os = "unknown"))'.dependencies]
 libp2p-gossipsub =  { version = "0.44.0", path = "../../protocols/gossipsub", optional = true }
diff --git a/protocols/gossipsub/Cargo.toml b/protocols/gossipsub/Cargo.toml
index c05eb148079..b6f73342a16 100644
--- a/protocols/gossipsub/Cargo.toml
+++ b/protocols/gossipsub/Cargo.toml
@@ -33,7 +33,7 @@ thiserror = "1.0"
 wasm-timer = "0.2.5"
 instant = "0.1.11"
 # Metrics dependencies
-prometheus-client = "0.19.0"
+prometheus-client = "0.21.1"
 
 [dev-dependencies]
 async-std = "1.6.3"