diff --git a/Cargo.toml b/Cargo.toml
index 547dbe8..7328df6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ ledger = ["regex", "tokio", "ledger_bitcoin_client", "ledger-apdu", "ledger-tran
 base64 = "0.13.0"
 async-trait = "0.1.52"
 futures = "0.3"
-bitcoin = { version = "0.29.1", features = ["base64", "serde"] }
+bitcoin = { version = "0.30.0", default-features = false, features = ["base64", "serde", "no-std"] }
 
 # specter & ledger
 tokio = { version = "1.21.0", features = ["net", "time", "io-util", "sync"], optional = true }
@@ -28,7 +28,7 @@ serialport = { version = "4.2", optional = true }
 
 # ledger
 regex = { version = "1.6.0", optional = true }
-ledger_bitcoin_client = { version = "0.1.3", optional = true }
+ledger_bitcoin_client = { git = "https://github.com/edouardparis/app-bitcoin-new", branch = "bitcoin-0.30", optional = true }
 ledger-apdu = { version = "0.10", optional = true }
 ledger-transport-hid = { version = "0.10", optional = true }
 hidapi = { version = "1.4.1", features = ["linux-static-hidraw"], default-features = false, optional = true }
diff --git a/src/ledger.rs b/src/ledger.rs
index 55beb9c..391a3a5 100644
--- a/src/ledger.rs
+++ b/src/ledger.rs
@@ -5,10 +5,11 @@ use std::net::{IpAddr, Ipv4Addr, SocketAddr};
 use std::str::FromStr;
 
 use async_trait::async_trait;
-use bitcoin::util::{
+use bitcoin::{
     bip32::{DerivationPath, ExtendedPubKey, Fingerprint},
     psbt::Psbt,
 };
+use ledger_bitcoin_client::psbt::PartialSignature;
 use regex::Regex;
 
 use ledger_apdu::APDUAnswer;
@@ -122,9 +123,19 @@ impl<T: Transport + Sync + Send> HWI for Ledger<T> {
     async fn sign_tx(&self, psbt: &mut Psbt) -> Result<(), HWIError> {
         if let Some((policy, hmac)) = &self.options.wallet {
             let sigs = self.client.sign_psbt(psbt, policy, hmac.as_ref()).await?;
-            for (i, key, sig) in sigs {
+            for (i, sig) in sigs {
                 let input = psbt.inputs.get_mut(i).ok_or(HWIError::DeviceDidNotSign)?;
-                input.partial_sigs.insert(key, sig);
+                match sig {
+                    PartialSignature::Sig(key, sig) => {
+                        input.partial_sigs.insert(key, sig);
+                    }
+                    PartialSignature::TapScriptSig(key, Some(tapleaf_hash), sig) => {
+                        input.tap_script_sigs.insert((key, tapleaf_hash), sig);
+                    }
+                    PartialSignature::TapScriptSig(_, None, sig) => {
+                        input.tap_key_sig = Some(sig);
+                    }
+                }
             }
             Ok(())
         } else {
diff --git a/src/lib.rs b/src/lib.rs
index 18864e6..0d3810d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,7 +4,7 @@ pub mod ledger;
 pub mod specter;
 
 use async_trait::async_trait;
-use bitcoin::util::{
+use bitcoin::{
     bip32::{DerivationPath, ExtendedPubKey, Fingerprint},
     psbt::PartiallySignedTransaction as Psbt,
 };
diff --git a/src/specter.rs b/src/specter.rs
index 17201a3..f5a802b 100644
--- a/src/specter.rs
+++ b/src/specter.rs
@@ -2,9 +2,8 @@ use std::fmt::Debug;
 use std::str::FromStr;
 
 use bitcoin::{
-    consensus::encode,
-    util::bip32::{DerivationPath, ExtendedPubKey, Fingerprint},
-    util::psbt::PartiallySignedTransaction as Psbt,
+    bip32::{DerivationPath, ExtendedPubKey, Fingerprint},
+    psbt::PartiallySignedTransaction as Psbt,
 };
 
 use serialport::{available_ports, SerialPortType};
@@ -70,12 +69,12 @@ impl<T: Transport> Specter<T> {
         self.transport
             .request(&format!(
                 "\r\n\r\nsign {}\r\n",
-                base64::encode(encode::serialize(&psbt))
+                base64::encode(psbt.serialize())
             ))
             .await
             .and_then(|resp| base64::decode(resp).map_err(|e| SpecterError::Device(e.to_string())))
             .and_then(|bytes| {
-                encode::deserialize(&bytes).map_err(|e| SpecterError::Device(e.to_string()))
+                Psbt::deserialize(&bytes).map_err(|e| SpecterError::Device(e.to_string()))
             })
     }
 }