diff --git a/drongo b/drongo
index 55717c31..10035278 160000
--- a/drongo
+++ b/drongo
@@ -1 +1 @@
-Subproject commit 55717c31bf8046e558ee90a5997c1de769517813
+Subproject commit 10035278543d9ca90b11ae3d396edc3e6131fee2
diff --git a/src/main/java/com/sparrowwallet/sparrow/control/SignaturesProgressBar.java b/src/main/java/com/sparrowwallet/sparrow/control/SignaturesProgressBar.java
index 87522de1..f43402c2 100644
--- a/src/main/java/com/sparrowwallet/sparrow/control/SignaturesProgressBar.java
+++ b/src/main/java/com/sparrowwallet/sparrow/control/SignaturesProgressBar.java
@@ -1,5 +1,6 @@
 package com.sparrowwallet.sparrow.control;
 
+import com.sparrowwallet.drongo.protocol.TransactionSignature;
 import com.sparrowwallet.drongo.wallet.Keystore;
 import com.sparrowwallet.sparrow.EventManager;
 import com.sparrowwallet.sparrow.event.KeystoreSignedEvent;
@@ -7,8 +8,8 @@ import javafx.animation.KeyFrame;
 import javafx.animation.KeyValue;
 import javafx.animation.Timeline;
 import javafx.beans.property.SimpleObjectProperty;
-import javafx.collections.ListChangeListener;
-import javafx.collections.ObservableList;
+import javafx.collections.MapChangeListener;
+import javafx.collections.ObservableMap;
 import javafx.geometry.Insets;
 import javafx.geometry.Orientation;
 import javafx.geometry.Pos;
@@ -18,6 +19,9 @@ import javafx.scene.layout.StackPane;
 import javafx.util.Duration;
 import org.controlsfx.control.SegmentedBar;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class SignaturesProgressBar extends SegmentedBar<SignaturesProgressBar.SignatureProgressSegment> {
     public SignaturesProgressBar() {
         setOrientation(Orientation.HORIZONTAL);
@@ -25,10 +29,11 @@ public class SignaturesProgressBar extends SegmentedBar<SignaturesProgressBar.Si
         setInfoNodeFactory(segment -> segment.getKeystore() == null ? null : new SignatureProgressSegmentLabel(segment.getKeystore().getLabel()));
     }
 
-    public void initialize(ObservableList<Keystore> signedKeystores, int threshold) {
+    public void initialize(ObservableMap<TransactionSignature, Keystore> signatureKeystoreMap, int threshold) {
         getStyleClass().add("signatures-progress-bar");
         getSegments().clear();
 
+        List<Keystore> signedKeystores = new ArrayList<>(signatureKeystoreMap.values());
         int numSegments = Math.max(threshold, signedKeystores.size());
         double segmentSize = 100d / numSegments;
         for(int i = 0; i < numSegments; i++) {
@@ -39,19 +44,20 @@ public class SignaturesProgressBar extends SegmentedBar<SignaturesProgressBar.Si
             }
         }
 
-        signedKeystores.addListener((ListChangeListener<Keystore>) c -> {
-            int numSegments1 = Math.max(threshold, c.getList().size());
-            double newSegmentSize = 100d / numSegments1;
+        signatureKeystoreMap.addListener((MapChangeListener<TransactionSignature, Keystore>) c -> {
+            List<Keystore> newSignedKeystores = new ArrayList<>(c.getMap().values());
+            int newNumSegments = Math.max(threshold, newSignedKeystores.size());
+            double newSegmentSize = 100d / newNumSegments;
 
-            for(int i = 0; i < numSegments1; i++) {
+            for(int i = 0; i < newNumSegments; i++) {
                 SignatureProgressSegment segment = null;
                 if(i < getSegments().size()) {
                     segment = getSegments().get(i);
                 }
 
                 Keystore signedKeystore = null;
-                if(i < signedKeystores.size()) {
-                    signedKeystore = signedKeystores.get(i);
+                if(i < newSignedKeystores.size()) {
+                    signedKeystore = newSignedKeystores.get(i);
                 }
 
                 if(segment != null) {
diff --git a/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java b/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java
index 24d132b3..778e3ec6 100644
--- a/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java
+++ b/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java
@@ -405,7 +405,7 @@ public class HeadersController extends TransactionFormController implements Init
                 updateSignedKeystores(signingWallet);
 
                 int threshold = signingWallet.getDefaultPolicy().getNumSignaturesRequired();
-                signaturesProgressBar.initialize(headersForm.getSignedKeystores(), threshold);
+                signaturesProgressBar.initialize(headersForm.getSignatureKeystoreMap(), threshold);
             });
 
             EventManager.get().post(new RequestOpenWalletsEvent());
@@ -705,12 +705,11 @@ public class HeadersController extends TransactionFormController implements Init
     }
 
     private void updateSignedKeystores(Wallet signingWallet) {
-        Map<PSBTInput, List<Keystore>> signedKeystoresMap = signingWallet.getSignedKeystores(headersForm.getPsbt());
-        Optional<List<Keystore>> optSignedKeystores = signedKeystoresMap.values().stream().filter(list -> !list.isEmpty()).min(Comparator.comparingInt(List::size));
+        Map<PSBTInput, Map<TransactionSignature, Keystore>> signedKeystoresMap = signingWallet.getSignedKeystores(headersForm.getPsbt());
+        Optional<Map<TransactionSignature, Keystore>> optSignedKeystores = signedKeystoresMap.values().stream().filter(map -> !map.isEmpty()).min(Comparator.comparingInt(Map::size));
         optSignedKeystores.ifPresent(signedKeystores -> {
-            List<Keystore> newSignedKeystores = new ArrayList<>(signedKeystores);
-            newSignedKeystores.removeAll(headersForm.getSignedKeystores());
-            headersForm.getSignedKeystores().addAll(newSignedKeystores);
+            headersForm.getSignatureKeystoreMap().keySet().retainAll(signedKeystores.keySet());
+            headersForm.getSignatureKeystoreMap().putAll(signedKeystores);
         });
     }
 
@@ -922,6 +921,7 @@ public class HeadersController extends TransactionFormController implements Init
     @Subscribe
     public void keystoreSigned(KeystoreSignedEvent event) {
         if(headersForm.getSignedKeystores().contains(event.getKeystore()) && headersForm.getPsbt() != null) {
+            //Attempt to finalize PSBT - will do nothing if all inputs are not signed
             finalizePSBT();
         }
     }
diff --git a/src/main/java/com/sparrowwallet/sparrow/transaction/InputController.java b/src/main/java/com/sparrowwallet/sparrow/transaction/InputController.java
index 14a88af9..2641af03 100644
--- a/src/main/java/com/sparrowwallet/sparrow/transaction/InputController.java
+++ b/src/main/java/com/sparrowwallet/sparrow/transaction/InputController.java
@@ -11,7 +11,7 @@ import com.sparrowwallet.drongo.wallet.Keystore;
 import com.sparrowwallet.sparrow.EventManager;
 import com.sparrowwallet.sparrow.control.*;
 import com.sparrowwallet.sparrow.event.*;
-import javafx.collections.ListChangeListener;
+import javafx.collections.MapChangeListener;
 import javafx.fxml.FXML;
 import javafx.fxml.Initializable;
 import javafx.scene.control.*;
@@ -126,7 +126,7 @@ public class InputController extends TransactionFormController implements Initia
         initializeLocktimeFields(txInput);
 
         if(psbtInput != null) {
-            inputForm.getSignedKeystores().addListener((ListChangeListener<Keystore>) c -> {
+            inputForm.getSignatureKeystoreMap().addListener((MapChangeListener<TransactionSignature, Keystore>) c -> {
                 updateSignatures(inputForm.getPsbtInput());
             });
         }
diff --git a/src/main/java/com/sparrowwallet/sparrow/transaction/InputsController.java b/src/main/java/com/sparrowwallet/sparrow/transaction/InputsController.java
index 92d1f7b4..b6ce6f2a 100644
--- a/src/main/java/com/sparrowwallet/sparrow/transaction/InputsController.java
+++ b/src/main/java/com/sparrowwallet/sparrow/transaction/InputsController.java
@@ -13,7 +13,7 @@ import com.sparrowwallet.sparrow.event.BitcoinUnitChangedEvent;
 import com.sparrowwallet.sparrow.event.BlockTransactionFetchedEvent;
 import com.sparrowwallet.sparrow.event.PSBTCombinedEvent;
 import com.sparrowwallet.sparrow.event.PSBTFinalizedEvent;
-import javafx.collections.ListChangeListener;
+import javafx.collections.MapChangeListener;
 import javafx.fxml.FXML;
 import javafx.fxml.Initializable;
 import javafx.scene.chart.PieChart;
@@ -62,7 +62,7 @@ public class InputsController extends TransactionFormController implements Initi
 
         if(inputsForm.getPsbt() != null) {
             updatePSBTInputs(inputsForm.getPsbt());
-            inputsForm.getSignedKeystores().addListener((ListChangeListener<Keystore>) c -> {
+            inputsForm.getSignatureKeystoreMap().addListener((MapChangeListener<TransactionSignature, Keystore>) c -> {
                 updatePSBTInputs(inputsForm.getPsbt());
             });
         } else if(inputsForm.getInputTransactions() != null) {
diff --git a/src/main/java/com/sparrowwallet/sparrow/transaction/TransactionData.java b/src/main/java/com/sparrowwallet/sparrow/transaction/TransactionData.java
index 9161d208..559b6f97 100644
--- a/src/main/java/com/sparrowwallet/sparrow/transaction/TransactionData.java
+++ b/src/main/java/com/sparrowwallet/sparrow/transaction/TransactionData.java
@@ -2,6 +2,7 @@ package com.sparrowwallet.sparrow.transaction;
 
 import com.sparrowwallet.drongo.protocol.Sha256Hash;
 import com.sparrowwallet.drongo.protocol.Transaction;
+import com.sparrowwallet.drongo.protocol.TransactionSignature;
 import com.sparrowwallet.drongo.psbt.PSBT;
 import com.sparrowwallet.drongo.wallet.BlockTransaction;
 import com.sparrowwallet.drongo.wallet.Keystore;
@@ -9,9 +10,10 @@ import com.sparrowwallet.drongo.wallet.Wallet;
 import com.sparrowwallet.sparrow.io.Storage;
 import javafx.beans.property.SimpleObjectProperty;
 import javafx.collections.FXCollections;
-import javafx.collections.ObservableList;
 import javafx.collections.ObservableMap;
 
+import java.util.Collection;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 
@@ -30,7 +32,7 @@ public class TransactionData {
 
     private final ObservableMap<Wallet, Storage> availableWallets = FXCollections.observableHashMap();
     private final SimpleObjectProperty<Wallet> signingWallet = new SimpleObjectProperty<>(this, "signingWallet", null);
-    private final ObservableList<Keystore> signedKeystores = FXCollections.observableArrayList();
+    private final ObservableMap<TransactionSignature, Keystore> signatureKeystoreMap = FXCollections.observableMap(new LinkedHashMap<>());
 
     public TransactionData(String name, PSBT psbt) {
         this(name, psbt.getTransaction());
@@ -147,7 +149,11 @@ public class TransactionData {
         this.signingWallet.set(wallet);
     }
 
-    public ObservableList<Keystore> getSignedKeystores() {
-        return signedKeystores;
+    public ObservableMap<TransactionSignature, Keystore> getSignatureKeystoreMap() {
+        return signatureKeystoreMap;
+    }
+
+    public Collection<Keystore> getSignedKeystores() {
+        return signatureKeystoreMap.values();
     }
 }
diff --git a/src/main/java/com/sparrowwallet/sparrow/transaction/TransactionForm.java b/src/main/java/com/sparrowwallet/sparrow/transaction/TransactionForm.java
index 93a342f0..c7c24f78 100644
--- a/src/main/java/com/sparrowwallet/sparrow/transaction/TransactionForm.java
+++ b/src/main/java/com/sparrowwallet/sparrow/transaction/TransactionForm.java
@@ -2,17 +2,18 @@ package com.sparrowwallet.sparrow.transaction;
 
 import com.sparrowwallet.drongo.protocol.Sha256Hash;
 import com.sparrowwallet.drongo.protocol.Transaction;
+import com.sparrowwallet.drongo.protocol.TransactionSignature;
 import com.sparrowwallet.drongo.psbt.PSBT;
 import com.sparrowwallet.drongo.wallet.BlockTransaction;
 import com.sparrowwallet.drongo.wallet.Keystore;
 import com.sparrowwallet.drongo.wallet.Wallet;
 import com.sparrowwallet.sparrow.io.Storage;
 import javafx.beans.property.SimpleObjectProperty;
-import javafx.collections.ObservableList;
 import javafx.collections.ObservableMap;
 import javafx.scene.Node;
 
 import java.io.IOException;
+import java.util.Collection;
 import java.util.List;
 import java.util.Map;
 
@@ -83,7 +84,11 @@ public abstract class TransactionForm {
         txdata.setSigningWallet(signingWallet);
     }
 
-    public ObservableList<Keystore> getSignedKeystores() {
+    public ObservableMap<TransactionSignature, Keystore> getSignatureKeystoreMap() {
+        return txdata.getSignatureKeystoreMap();
+    }
+
+    public Collection<Keystore> getSignedKeystores() {
         return txdata.getSignedKeystores();
     }