diff --git a/Cargo.lock b/Cargo.lock
index 6c8763f..1e9b672 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -495,9 +495,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "clap"
-version = "4.3.19"
+version = "4.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fd304a20bff958a57f04c4e96a2e7594cc4490a0e809cbd48bb6437edaa452d"
+checksum = "c27cdf28c0f604ba3f512b0c9a409f8de8513e4816705deb0498b627e7c3a3fd"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -506,9 +506,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.3.19"
+version = "4.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01c6a3f08f1fe5662a35cfe393aec09c4df95f60ee93b7556505260f75eee9e1"
+checksum = "08a9f1ab5e9f01a9b81f202e8562eb9a10de70abf9eaeac1be465c28b75aa4aa"
 dependencies = [
  "anstream",
  "anstyle",
diff --git a/Cargo.toml b/Cargo.toml
index 43959a5..72e8714 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ edition = "2021"
 description = "TCP-over-HTTP solution"
 
 [dependencies]
-clap = { version = "4.3.19", features = ["derive", "env"] }
+clap = { version = "4.3.21", features = ["derive", "env"] }
 log = "0.4.19"
 env_logger = "0.10.0"
 actix = "0.13.0"