diff --git a/src/bin/bal-server.rs b/src/bin/bal-server.rs
index 3881137..def0906 100644
--- a/src/bin/bal-server.rs
+++ b/src/bin/bal-server.rs
@@ -32,7 +32,7 @@ use bal_server::db::{
 use bal_server::xpub::new_address_from_xpub;
 
 const VERSION: &str = env!("CARGO_PKG_VERSION");
-const NETWORKS: [&str; 4] = ["bitcoin", "testnet", "signet", "regtest"];
+const NETWORKS: [&str; 5] = ["bitcoin", "testnet", "testnet4", "signet", "regtest"];
 #[derive(Debug, Clone, Serialize, Deserialize)]
 struct NetConfig {
     address: String,
@@ -61,6 +61,7 @@ struct MyConfig {
     regtest: NetConfig,
     signet: NetConfig,
     testnet: NetConfig,
+    testnet4: NetConfig,
     mainnet: NetConfig,
     info: String,
     bind_address: String,
@@ -98,6 +99,7 @@ impl Default for MyConfig {
             regtest: NetConfig::default_network("regtest".to_string(), Network::Regtest),
             signet: NetConfig::default_network("signet".to_string(), Network::Signet),
             testnet: NetConfig::default_network("testnet".to_string(), Network::Testnet),
+            testnet4: NetConfig::default_network("testnet4".to_string(), Network::Testnet4),
             mainnet: NetConfig::default_network("bitcoin".to_string(), Network::Bitcoin),
             bind_address: "127.0.0.1".to_string(),
             bind_port: 9137,
@@ -116,6 +118,7 @@ impl MyConfig {
         match param {
             "regtest" => &self.regtest,
             "testnet" => &self.testnet,
+            "testnet4" => &self.testnet4,
             "signet" => &self.signet,
             _ => &self.mainnet,
         }
@@ -625,6 +628,7 @@ fn parse_env(cfg: &Arc<Mutex<MyConfig>>) {
     cfg_lock = parse_env_netconfig(cfg_lock, "regtest");
     cfg_lock = parse_env_netconfig(cfg_lock, "signet");
     cfg_lock = parse_env_netconfig(cfg_lock, "testnet");
+    cfg_lock = parse_env_netconfig(cfg_lock, "testnet4");
     drop(parse_env_netconfig(cfg_lock, "bitcoin"));
 }
 fn parse_env_netconfig<'a>(
@@ -635,6 +639,7 @@ fn parse_env_netconfig<'a>(
         "regtest" => &mut cfg_lock.regtest,
         "signet" => &mut cfg_lock.signet,
         "testnet" => &mut cfg_lock.testnet,
+        "testnet4" => &mut cfg_lock.testnet4,
         &_ => &mut cfg_lock.mainnet,
     };
     if let Ok(value) = env::var(format!("BAL_SERVER_{}_ADDRESS", chain.to_uppercase())) {