diff --git a/nodes/nomos-node/Cargo.toml b/nodes/nomos-node/Cargo.toml
index ea500fb4..1c8321d5 100644
--- a/nodes/nomos-node/Cargo.toml
+++ b/nodes/nomos-node/Cargo.toml
@@ -13,6 +13,7 @@ clap = { version = "4", features = ["derive"] }
 chrono = "0.4"
 futures = "0.3"
 http = "0.2.9"
+hex = "0.4.3"
 overwatch-rs = { git = "https://github.com/logos-co/Overwatch", branch = "main" }
 overwatch-derive = { git = "https://github.com/logos-co/Overwatch", branch = "main" }
 tracing = "0.1"
@@ -23,6 +24,7 @@ nomos-log = { path = "../../nomos-services/log" }
 nomos-mempool = { path = "../../nomos-services/mempool", features = ["mock"] }
 nomos-http = { path = "../../nomos-services/http", features = ["http"] }
 nomos-consensus = { path = "../../nomos-services/consensus" }
+nomos-libp2p = { path = "../../nomos-libp2p", optional = true }
 metrics = { path = "../../nomos-services/metrics", optional = true }
 tracing-subscriber = "0.3"
 consensus-engine = { path = "../../consensus-engine" }
@@ -37,4 +39,4 @@ waku-bindings = { version = "0.1.1", optional = true }
 [features]
 default = ["waku"]
 waku = ["waku-bindings", "nomos-network/waku", "nomos-mempool/waku", "nomos-consensus/waku"]
-libp2p = ["nomos-network/libp2p", "nomos-mempool/libp2p", "nomos-consensus/libp2p"]
+libp2p = ["nomos-libp2p", "nomos-network/libp2p", "nomos-mempool/libp2p", "nomos-consensus/libp2p"]
diff --git a/nodes/nomos-node/src/lib.rs b/nodes/nomos-node/src/lib.rs
index 204e5bf2..9fe56cfc 100644
--- a/nodes/nomos-node/src/lib.rs
+++ b/nodes/nomos-node/src/lib.rs
@@ -13,6 +13,8 @@ use nomos_core::fountain::mock::MockFountain;
 use nomos_http::backends::axum::AxumBackend;
 use nomos_http::bridge::HttpBridgeService;
 use nomos_http::http::HttpService;
+#[cfg(feature = "libp2p")]
+use nomos_libp2p::secp256k1::SecretKey;
 use nomos_log::Logger;
 #[cfg(feature = "libp2p")]
 use nomos_mempool::network::adapters::libp2p::Libp2pAdapter as MempoolLibp2pAdapter;
@@ -27,6 +29,8 @@ use nomos_network::NetworkService;
 use overwatch_derive::*;
 use overwatch_rs::services::{handle::ServiceHandle, ServiceData};
 use serde::{Deserialize, Serialize};
+#[cfg(feature = "waku")]
+use waku_bindings::SecretKey;
 
 pub use tx::Tx;
 
@@ -46,6 +50,25 @@ pub struct Config {
     pub metrics: <MetricsService<MapMetricsBackend<MetricsData>> as ServiceData>::Settings,
 }
 
+impl Config {
+    pub fn set_node_key(&mut self, node_key: Option<String>) -> Result<()> {
+        if let Some(node_key) = node_key {
+            #[cfg(feature = "waku")]
+            {
+                use std::str::FromStr;
+                self.network.backend.inner.node_key = Some(SecretKey::from_str(&node_key)?)
+            }
+            #[cfg(feature = "libp2p")]
+            {
+                let mut key_bytes = hex::decode(node_key)?;
+                self.network.backend.node_key =
+                    SecretKey::try_from_bytes(key_bytes.as_mut_slice())?;
+            }
+        }
+        Ok(())
+    }
+}
+
 #[cfg(feature = "waku")]
 pub type Carnot = CarnotConsensus<
     ConsensusWakuAdapter,
diff --git a/nodes/nomos-node/src/main.rs b/nodes/nomos-node/src/main.rs
index 99642263..e353938a 100644
--- a/nodes/nomos-node/src/main.rs
+++ b/nodes/nomos-node/src/main.rs
@@ -22,11 +22,16 @@ use std::sync::Arc;
 struct Args {
     /// Path for a yaml-encoded network config file
     config: std::path::PathBuf,
+    /// Overrides node key in config file
+    #[clap(long = "node-key")]
+    node_key: Option<String>,
 }
 
 fn main() -> Result<()> {
-    let Args { config } = Args::parse();
-    let config = serde_yaml::from_reader::<_, Config>(std::fs::File::open(config)?)?;
+    let Args { config, node_key } = Args::parse();
+    let mut config = serde_yaml::from_reader::<_, Config>(std::fs::File::open(config)?)?;
+    config.set_node_key(node_key)?;
+
     let bridges: Vec<HttpBridge> = vec![
         Arc::new(Box::new(bridges::carnot_info_bridge)),
         Arc::new(Box::new(bridges::mempool_metrics_bridge)),