diff --git a/Cargo.lock b/Cargo.lock
index 62219938e6..dfcce58d07 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -506,9 +506,9 @@ dependencies = [
 
 [[package]]
 name = "bitcoin"
-version = "0.32.3"
+version = "0.32.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0032b0e8ead7074cda7fc4f034409607e3f03a6f71d66ade8a307f79b4d99e73"
+checksum = "ce6bc65742dea50536e35ad42492b234c27904a27f0abdcbce605015cb4ea026"
 dependencies = [
  "base58ck",
  "bech32",
diff --git a/Cargo.toml b/Cargo.toml
index 80a8b1b40e..e256de9ef0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,7 +25,7 @@ axum-server = "0.5.0"
 base64 = "0.22.0"
 bip322 = "0.0.8"
 bip39 = "2.0.0"
-bitcoin = { version = "=0.32.3", features = ["rand"] }
+bitcoin = { version = "0.32.5", features = ["rand"] }
 bitcoincore-rpc = "0.19.0"
 boilerplate = { version = "1.0.0", features = ["axum"] }
 brotli = "7.0.0"
diff --git a/crates/mockcore/Cargo.toml b/crates/mockcore/Cargo.toml
index 9ba3495753..07c841dd68 100644
--- a/crates/mockcore/Cargo.toml
+++ b/crates/mockcore/Cargo.toml
@@ -9,7 +9,7 @@ repository = "https://github.com/ordinals/ord"
 
 [dependencies]
 base64 = "0.22.0"
-bitcoin = { version = "0.32.3", features = ["serde", "rand"] }
+bitcoin = { version = "0.32.5", features = ["serde", "rand"] }
 hex = "0.4.3"
 jsonrpc-core = "18.0.0"
 jsonrpc-derive = "18.0.0"
diff --git a/crates/mockcore/src/lib.rs b/crates/mockcore/src/lib.rs
index 0c1933f2e4..56484d5eb4 100644
--- a/crates/mockcore/src/lib.rs
+++ b/crates/mockcore/src/lib.rs
@@ -346,9 +346,10 @@ impl Handle {
   pub fn network(&self) -> String {
     match self.state().network {
       Network::Bitcoin => "mainnet".to_string(),
-      Network::Testnet => Network::Testnet.to_string(),
-      Network::Signet => Network::Signet.to_string(),
       Network::Regtest => Network::Regtest.to_string(),
+      Network::Signet => Network::Signet.to_string(),
+      Network::Testnet4 => Network::Testnet4.to_string(),
+      Network::Testnet => Network::Testnet.to_string(),
       _ => panic!(),
     }
   }
diff --git a/crates/ordinals/Cargo.toml b/crates/ordinals/Cargo.toml
index 6dcd561b2b..e0cde94f6a 100644
--- a/crates/ordinals/Cargo.toml
+++ b/crates/ordinals/Cargo.toml
@@ -9,7 +9,7 @@ license = "CC0-1.0"
 rust-version = "1.74.0"
 
 [dependencies]
-bitcoin = { version = "=0.32.3", features = ["rand"] }
+bitcoin = { version = "0.32.5", features = ["rand"] }
 derive_more = { version = "1.0.0", features = ["display", "from_str"] }
 serde = { version = "1.0.137", features = ["derive"] }
 serde_with = "3.7.0"
diff --git a/crates/ordinals/src/sat_point.rs b/crates/ordinals/src/sat_point.rs
index 144cf9e215..3e10a1b861 100644
--- a/crates/ordinals/src/sat_point.rs
+++ b/crates/ordinals/src/sat_point.rs
@@ -44,7 +44,7 @@ impl Encodable for SatPoint {
 }
 
 impl Decodable for SatPoint {
-  fn consensus_decode<D: bitcoin::io::Read + bitcoin::io::BufRead + ?Sized>(
+  fn consensus_decode<D: bitcoin::io::Read + ?Sized>(
     d: &mut D,
   ) -> Result<Self, bitcoin::consensus::encode::Error> {
     Ok(SatPoint {
diff --git a/deploy/setup b/deploy/setup
index 508e2c7cd5..b923f1a812 100755
--- a/deploy/setup
+++ b/deploy/setup
@@ -53,11 +53,16 @@ case $CHAIN in
     CSP_ORIGIN=signet.ordinals.com
     ufw allow 38333
     ;;
-  test)
+  testnet3)
     COOKIE_FILE_DIR=/var/lib/bitcoind/testnet3
     CSP_ORIGIN=testnet.ordinals.com
     ufw allow 18333
     ;;
+  testnet4)
+    COOKIE_FILE_DIR=/var/lib/bitcoind/testnet4
+    CSP_ORIGIN=testnet4.ordinals.com
+    ufw allow 48333
+    ;;
   *)
     echo "Unknown chain: $CHAIN"
     exit 1
diff --git a/justfile b/justfile
index 2e9728dafd..6a295eefad 100644
--- a/justfile
+++ b/justfile
@@ -50,10 +50,14 @@ deploy-signet branch='master' remote='ordinals/ord': \
   (deploy branch remote 'signet' 'signet.ordinals.net')
 
 deploy-testnet branch='master' remote='ordinals/ord': \
-  (deploy branch remote 'test' 'testnet.ordinals.net')
+  (deploy branch remote 'testnet3' 'testnet.ordinals.net')
+
+deploy-testnet4 branch='master' remote='ordinals/ord': \
+  (deploy branch remote 'testnet4' 'testnet4.ordinals.net')
 
 deploy-all: \
   deploy-testnet \
+  deploy-testnet4 \
   deploy-signet \
   deploy-mainnet-alpha \
   deploy-mainnet-bravo \
@@ -66,7 +70,7 @@ delete-indices: \
 delete-index domain:
   ssh root@{{domain}} 'systemctl stop ord && rm -f /var/lib/ord/*/index.redb'
 
-servers := 'alpha bravo charlie signet testnet'
+servers := 'alpha bravo charlie signet testnet3 testnet4'
 
 initialize-server-keys:
   #!/usr/bin/env bash
diff --git a/src/chain.rs b/src/chain.rs
index da0e3d7d5c..68a520073a 100644
--- a/src/chain.rs
+++ b/src/chain.rs
@@ -6,10 +6,11 @@ pub enum Chain {
   #[default]
   #[value(alias("main"))]
   Mainnet,
+  Regtest,
+  Signet,
   #[value(alias("test"))]
   Testnet,
-  Signet,
-  Regtest,
+  Testnet4,
 }
 
 impl Chain {
@@ -23,13 +24,14 @@ impl Chain {
       Self::Regtest => 18443,
       Self::Signet => 38332,
       Self::Testnet => 18332,
+      Self::Testnet4 => 48332,
     }
   }
 
   pub(crate) fn inscription_content_size_limit(self) -> Option<usize> {
     match self {
       Self::Mainnet | Self::Regtest => None,
-      Self::Testnet | Self::Signet => Some(1024),
+      Self::Testnet | Self::Testnet4 | Self::Signet => Some(1024),
     }
   }
 
@@ -39,6 +41,7 @@ impl Chain {
       Self::Regtest => 0,
       Self::Signet => 112402,
       Self::Testnet => 2413343,
+      Self::Testnet4 => 0,
     }
   }
 
@@ -52,6 +55,7 @@ impl Chain {
       Self::Regtest => 110,
       Self::Signet => 175392,
       Self::Testnet => 2544192,
+      Self::Testnet4 => 0,
     }
   }
 
@@ -73,9 +77,10 @@ impl Chain {
   pub(crate) fn join_with_data_dir(self, data_dir: impl AsRef<Path>) -> PathBuf {
     match self {
       Self::Mainnet => data_dir.as_ref().to_owned(),
-      Self::Testnet => data_dir.as_ref().join("testnet3"),
-      Self::Signet => data_dir.as_ref().join("signet"),
       Self::Regtest => data_dir.as_ref().join("regtest"),
+      Self::Signet => data_dir.as_ref().join("signet"),
+      Self::Testnet => data_dir.as_ref().join("testnet3"),
+      Self::Testnet4 => data_dir.as_ref().join("testnet4"),
     }
   }
 }
@@ -84,9 +89,10 @@ impl From<Chain> for Network {
   fn from(chain: Chain) -> Network {
     match chain {
       Chain::Mainnet => Network::Bitcoin,
-      Chain::Testnet => Network::Testnet,
-      Chain::Signet => Network::Signet,
       Chain::Regtest => Network::Regtest,
+      Chain::Signet => Network::Signet,
+      Chain::Testnet => Network::Testnet,
+      Chain::Testnet4 => Network::Testnet4,
     }
   }
 }
@@ -101,6 +107,7 @@ impl Display for Chain {
         Self::Regtest => "regtest",
         Self::Signet => "signet",
         Self::Testnet => "testnet",
+        Self::Testnet4 => "testnet4",
       }
     )
   }
@@ -115,6 +122,7 @@ impl FromStr for Chain {
       "regtest" => Ok(Self::Regtest),
       "signet" => Ok(Self::Signet),
       "testnet" => Ok(Self::Testnet),
+      "testnet4" => Ok(Self::Testnet4),
       _ => Err(SnafuError::InvalidChain {
         chain: s.to_string(),
       }),
@@ -132,6 +140,7 @@ mod tests {
     assert_eq!("regtest".parse::<Chain>().unwrap(), Chain::Regtest);
     assert_eq!("signet".parse::<Chain>().unwrap(), Chain::Signet);
     assert_eq!("testnet".parse::<Chain>().unwrap(), Chain::Testnet);
+    assert_eq!("testnet4".parse::<Chain>().unwrap(), Chain::Testnet4);
     assert_eq!(
       "foo".parse::<Chain>().unwrap_err().to_string(),
       "Invalid chain `foo`"
diff --git a/src/options.rs b/src/options.rs
index 7ae22186ac..8ce04861f7 100644
--- a/src/options.rs
+++ b/src/options.rs
@@ -4,7 +4,7 @@ use super::*;
 #[command(group(
   ArgGroup::new("chains")
     .required(false)
-    .args(&["chain_argument", "signet", "regtest", "testnet"]),
+    .args(&["chain_argument", "signet", "regtest", "testnet", "testnet4"]),
 ))]
 pub struct Options {
   #[arg(long, help = "Load Bitcoin Core data dir from <BITCOIN_DATA_DIR>.")]
@@ -82,4 +82,6 @@ pub struct Options {
   pub(crate) signet: bool,
   #[arg(long, short, help = "Use testnet. Equivalent to `--chain testnet`.")]
   pub(crate) testnet: bool,
+  #[arg(long, help = "Use testnet4. Equivalent to `--chain testnet4`.")]
+  pub(crate) testnet4: bool,
 }
diff --git a/src/settings.rs b/src/settings.rs
index 2fe46fad32..149aaf30e4 100644
--- a/src/settings.rs
+++ b/src/settings.rs
@@ -156,6 +156,7 @@ impl Settings {
         .then_some(Chain::Signet)
         .or(options.regtest.then_some(Chain::Regtest))
         .or(options.testnet.then_some(Chain::Testnet))
+        .or(options.testnet4.then_some(Chain::Testnet4))
         .or(options.chain_argument),
       commit_interval: options.commit_interval,
       config: options.config,
@@ -431,9 +432,10 @@ impl Settings {
         Ok(blockchain_info) => {
           break match blockchain_info.chain.to_string().as_str() {
             "bitcoin" => Chain::Mainnet,
-            "testnet" => Chain::Testnet,
             "regtest" => Chain::Regtest,
             "signet" => Chain::Signet,
+            "testnet" => Chain::Testnet,
+            "testnet4" => Chain::Testnet4,
             other => bail!("Bitcoin RPC server on unknown chain: {other}"),
           }
         }
@@ -760,6 +762,20 @@ mod tests {
     } else {
       "/Bitcoin/signet/.cookie"
     }));
+
+    let cookie_file = parse(&["--testnet4"])
+      .cookie_file()
+      .unwrap()
+      .display()
+      .to_string();
+
+    assert!(cookie_file.ends_with(if cfg!(target_os = "linux") {
+      "/.bitcoin/testnet4/.cookie"
+    } else if cfg!(windows) {
+      r"\Bitcoin\testnet4\.cookie"
+    } else {
+      "/Bitcoin/testnet4/.cookie"
+    }));
   }
 
   #[test]
@@ -817,6 +833,7 @@ mod tests {
 
   #[test]
   fn network_accepts_aliases() {
+    #[track_caller]
     fn check_network_alias(alias: &str, suffix: &str) {
       let data_dir = parse(&["--chain", alias]).data_dir().display().to_string();
 
@@ -857,6 +874,14 @@ mod tests {
         "ord/testnet3"
       },
     );
+    check_network_alias(
+      "testnet4",
+      if cfg!(windows) {
+        r"ord\testnet4"
+      } else {
+        "ord/testnet4"
+      },
+    );
   }
 
   #[test]
diff --git a/src/subcommand/wallet/inscriptions.rs b/src/subcommand/wallet/inscriptions.rs
index 2f235678a2..48b3b0bfc8 100644
--- a/src/subcommand/wallet/inscriptions.rs
+++ b/src/subcommand/wallet/inscriptions.rs
@@ -14,6 +14,7 @@ pub(crate) fn run(wallet: Wallet) -> SubcommandResult {
     Chain::Regtest => "http://localhost/inscription/",
     Chain::Signet => "https://signet.ordinals.com/inscription/",
     Chain::Testnet => "https://testnet.ordinals.com/inscription/",
+    Chain::Testnet4 => "https://testnet4.ordinals.com/inscription/",
   };
 
   let mut output = Vec::new();