diff --git a/bdk-ffi/src/psbt.rs b/bdk-ffi/src/psbt.rs
index 4aca9842..98dba7ee 100644
--- a/bdk-ffi/src/psbt.rs
+++ b/bdk-ffi/src/psbt.rs
@@ -4,15 +4,12 @@ use bdk::bitcoin::util::psbt::PartiallySignedTransaction as BdkPartiallySignedTr
 use bdk::bitcoin::util::psbt::PsbtSighashType as BdkPsbtSighashType;
 use bdk::bitcoin::{EcdsaSighashType, SchnorrSighashType};
 use bdk::bitcoincore_rpc::jsonrpc::serde_json;
-use bdk::bitcoin::psbt::Input as BdkInput;
 use bdk::psbt::PsbtUtils;
 use std::ops::Deref;
 use std::str::FromStr;
 use std::sync::{Arc, Mutex};
-use bdk::bitcoin::consensus::{Decodable, Encodable};
-use bdk::miniscript::serde::Serialize;
 
-use crate::{BdkError, FeeRate, Transaction, TxOut};
+use crate::{BdkError, FeeRate, Transaction};
 
 #[derive(Debug)]
 pub(crate) struct PartiallySignedTransaction {
@@ -82,44 +79,14 @@ impl PartiallySignedTransaction {
     }
 
     // Return the inputs present in the PSBT.
-    pub(crate) fn inputs(&self) -> Vec<Input> {
+    pub(crate) fn inputs(&self) -> Vec<Arc<Input>> {
         let psbt = self.internal.lock().unwrap();
-        psbt.inputs().iter().map(|i| i.into()).collect()
+        psbt.inputs.iter().map(|i| Arc::new(i.clone().into())).collect()
     }
 }
 
-#[derive(Debug)]
-pub(crate) struct Input {
-    pub(crate) internal: Mutex<BdkInput>,
-}
-
-impl Input {
-    pub(crate) fn non_witness_utxo(&self) -> Option<Arc<Transaction>> {
-        let input = self.internal.lock().unwrap();
-        input.non_witness_utxo().map(|tx| Arc::new(tx.into()))
-    }
-
-    pub(crate) fn witness_utxo(&self) -> Option<Arc<TxOut>> {
-        let input = self.internal.lock().unwrap();
-        input.witness_utxo().map(|tx| Arc::new(tx.into()))
-    }
-
-    // pub(crate) fn new(raw_input: Vec<u8>) -> Self {
-    //     let input: BdkInput = BdkInput::consensus_decode(&raw_input[..]).unwrap();
-    //     Input {
-    //         internal: Mutex::new(input),
-    //     }
-    // }
-
-    // pub(crate) fn concensus_encode(&self) -> Vec<u8> {
-    //     let input = self.internal.lock().unwrap();
-    //     input.consensus_encode()
-    // }
-}
-
-/// A key-value map for an input of the corresponding index in the unsigned
-/// transaction.
-#[derive(Debug)]
+/// A key-value map for an input of the corresponding index in the unsigned transaction.
+#[derive(Clone, Debug)]
 pub(crate) struct Input {
     _inner: BdkInput,
 }
diff --git a/bdk-ffi/src/wallet.rs b/bdk-ffi/src/wallet.rs
index 0d832f4b..97c9bfd5 100644
--- a/bdk-ffi/src/wallet.rs
+++ b/bdk-ffi/src/wallet.rs
@@ -265,7 +265,7 @@ pub(crate) struct TxBuilder {
     pub(crate) drain_to: Option<BdkScript>,
     pub(crate) rbf: Option<RbfValue>,
     pub(crate) data: Vec<u8>,
-    pub(crate) foreign_utxos: Vec<(OutPoint, Input, u64)>,
+    pub(crate) foreign_utxos: Vec<(OutPoint, Arc<Input>, u64)>,
 }
 
 impl TxBuilder {
@@ -365,16 +365,19 @@ impl TxBuilder {
     ///
     /// Note unless you set only_witness_utxo any non-taproot psbt_input you pass to this method must
     /// have non_witness_utxo set otherwise you will get an error when finish is called.
-    pub fn add_foreign_utxo(
-        &mut self,
+    pub(crate) fn add_foreign_utxo(
+        &self,
         outpoint: OutPoint,
-        psbt_input: Input,
+        psbt_input: Arc<Input>,
         satisfaction_weight: u64,
     ) -> Arc<Self> {
-        let mut foreign_utxos = self.foreign_utxos.to_vec();
-        foreign_utxos.append((outpoint, psbt_input, satisfaction_weight));
+        // TODO: Why doesn't the OutPoint parameter here need an Arc?
+
+        let mut current_foreign_utxos: Vec<(OutPoint, Arc<Input>, u64)> = self.foreign_utxos.clone();
+        let new_foreign_utxo = (outpoint, psbt_input, satisfaction_weight);
+        current_foreign_utxos.push(new_foreign_utxo);
         Arc::new(TxBuilder {
-            foreign_utxos: foreign_utxos,
+            foreign_utxos: current_foreign_utxos,
             ..self.clone()
         })
     }