diff --git a/Cargo.lock b/Cargo.lock
index 6a8af0dd0..b8e56c647 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1786,9 +1786,9 @@ checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
 [[package]]
 name = "pico-args"
-version = "0.3.4"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28b9b4df73455c861d7cbf8be42f01d3b373ed7f02e378d55fa84eafc6f638b1"
+checksum = "5be167a7af36ee22fe3115051bc51f6e6c7054c9348e28deb4f49bd6f705a315"
 
 [[package]]
 name = "pin-project-lite"
diff --git a/samples/demo-server/Cargo.toml b/samples/demo-server/Cargo.toml
index 0407bc99c..a867617d2 100644
--- a/samples/demo-server/Cargo.toml
+++ b/samples/demo-server/Cargo.toml
@@ -13,7 +13,7 @@ log = "0.4"
 rand = "0.7"
 log4rs = "1.1"
 lazy_static = "1.4.0"
-pico-args = "0.3"
+pico-args = "0.5"
 
 [dependencies.opcua]
 path = "../../lib"
diff --git a/samples/discovery-client/Cargo.toml b/samples/discovery-client/Cargo.toml
index 648cd572a..34a3db4cc 100644
--- a/samples/discovery-client/Cargo.toml
+++ b/samples/discovery-client/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Adam Lock <locka99@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-pico-args = "0.3"
+pico-args = "0.5"
 
 [dependencies.opcua]
 path = "../../lib"
diff --git a/samples/event-client/Cargo.toml b/samples/event-client/Cargo.toml
index 5b44e8ce4..cdffe0ccc 100644
--- a/samples/event-client/Cargo.toml
+++ b/samples/event-client/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Adam Lock <locka99@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-pico-args="0.3"
+pico-args = "0.5"
 
 [dependencies.opcua]
 path = "../../lib"
diff --git a/samples/modbus-server/Cargo.toml b/samples/modbus-server/Cargo.toml
index d896bdeaa..d74b510b5 100644
--- a/samples/modbus-server/Cargo.toml
+++ b/samples/modbus-server/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Adam Lock <locka99@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-pico-args = "0.3"
+pico-args = "0.5"
 tokio = "0.1"
 tokio-core = "0.1"
 tokio-service = "0.1"
diff --git a/samples/mqtt-client/Cargo.toml b/samples/mqtt-client/Cargo.toml
index 7214a2375..3a0d1336a 100644
--- a/samples/mqtt-client/Cargo.toml
+++ b/samples/mqtt-client/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Adam Lock <locka99@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-pico-args = "0.3"
+pico-args = "0.5"
 # This is a completely arbitrary snapshot of rumqtt that happens to work
 rumqtt = { git = "https://github.com/AtherEnergy/rumqtt.git", rev = "83b4694525061e2ccef617c0ac867db2044cc4e7" }
 
diff --git a/samples/simple-client/Cargo.toml b/samples/simple-client/Cargo.toml
index 4f8debeb4..a82414d88 100644
--- a/samples/simple-client/Cargo.toml
+++ b/samples/simple-client/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Adam Lock <locka99@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-pico-args="0.3"
+pico-args = "0.5"
 
 [dependencies.opcua]
 path = "../../lib"
diff --git a/samples/web-client/Cargo.toml b/samples/web-client/Cargo.toml
index 5dd39fcd8..97f558b9d 100644
--- a/samples/web-client/Cargo.toml
+++ b/samples/web-client/Cargo.toml
@@ -10,7 +10,7 @@ actix-web = "0.7"
 serde = "1.0"
 serde_derive = "1.0"
 serde_json = "1.0"
-pico-args = "0.3"
+pico-args = "0.5"
 tokio = { version = "1", features = ["full"] }
 
 [dependencies.opcua]
diff --git a/tools/certificate-creator/Cargo.toml b/tools/certificate-creator/Cargo.toml
index c1672aee2..22e4bf0a1 100644
--- a/tools/certificate-creator/Cargo.toml
+++ b/tools/certificate-creator/Cargo.toml
@@ -14,7 +14,7 @@ travis-ci = { repository = "locka99/opcua" }
 appveyor = { repository = "locka99/opcua" }
 
 [dependencies]
-pico-args = "0.3"
+pico-args = "0.5"
 
 [dependencies.opcua]
 path = "../../lib"