diff --git a/InvenTree/InvenTree/api_version.py b/InvenTree/InvenTree/api_version.py
index e44aedf10b..993c7e9980 100644
--- a/InvenTree/InvenTree/api_version.py
+++ b/InvenTree/InvenTree/api_version.py
@@ -4,11 +4,14 @@ InvenTree API version information
 
 
 # InvenTree API version
-INVENTREE_API_VERSION = 50
+INVENTREE_API_VERSION = 51
 
 """
 Increment this API version number whenever there is a significant change to the API that any clients need to know about
 
+v51 -> 2022-05-24 : https://github.com/inventree/InvenTree/pull/3058
+    - Adds new fields to the SalesOrderShipment model
+
 v50 -> 2022-05-18 : https://github.com/inventree/InvenTree/pull/2912
     - Implement Attachments for manufacturer parts
 
diff --git a/InvenTree/order/migrations/0069_auto_20220524_0508.py b/InvenTree/order/migrations/0069_auto_20220524_0508.py
new file mode 100644
index 0000000000..ff37522332
--- /dev/null
+++ b/InvenTree/order/migrations/0069_auto_20220524_0508.py
@@ -0,0 +1,23 @@
+# Generated by Django 3.2.13 on 2022-05-24 05:08
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('order', '0068_alter_salesorderallocation_unique_together'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='salesordershipment',
+            name='invoice_number',
+            field=models.CharField(blank=True, help_text='Reference number for associated invoice', max_length=100, verbose_name='Invoice Number'),
+        ),
+        migrations.AddField(
+            model_name='salesordershipment',
+            name='link',
+            field=models.URLField(blank=True, help_text='Link to external page', verbose_name='Link'),
+        ),
+    ]
diff --git a/InvenTree/order/models.py b/InvenTree/order/models.py
index 550070e5df..0a5f05ba0f 100644
--- a/InvenTree/order/models.py
+++ b/InvenTree/order/models.py
@@ -1202,6 +1202,20 @@ class SalesOrderShipment(models.Model):
         help_text=_('Shipment tracking information'),
     )
 
+    invoice_number = models.CharField(
+        max_length=100,
+        blank=True,
+        unique=False,
+        verbose_name=_('Invoice Number'),
+        help_text=_('Reference number for associated invoice'),
+    )
+
+    link = models.URLField(
+        blank=True,
+        verbose_name=_('Link'),
+        help_text=_('Link to external page')
+    )
+
     def is_complete(self):
         return self.shipment_date is not None
 
@@ -1253,6 +1267,18 @@ class SalesOrderShipment(models.Model):
         if tracking_number is not None:
             self.tracking_number = tracking_number
 
+        # Was an invoice number provided?
+        invoice_number = kwargs.get('invoice_number', None)
+
+        if invoice_number is not None:
+            self.invoice_number = invoice_number
+
+        # Was a link provided?
+        link = kwargs.get('link', None)
+
+        if link is not None:
+            self.link = link
+
         self.save()
 
         trigger_event('salesordershipment.completed', id=self.pk)
diff --git a/InvenTree/order/serializers.py b/InvenTree/order/serializers.py
index 685697f99f..0743d95c33 100644
--- a/InvenTree/order/serializers.py
+++ b/InvenTree/order/serializers.py
@@ -886,6 +886,8 @@ class SalesOrderShipmentSerializer(InvenTreeModelSerializer):
             'checked_by',
             'reference',
             'tracking_number',
+            'invoice_number',
+            'link',
             'notes',
         ]
 
@@ -899,8 +901,10 @@ class SalesOrderShipmentCompleteSerializer(serializers.ModelSerializer):
         model = order.models.SalesOrderShipment
 
         fields = [
-            'tracking_number',
             'shipment_date',
+            'tracking_number',
+            'invoice_number',
+            'link',
         ]
 
     def validate(self, data):
@@ -928,15 +932,14 @@ class SalesOrderShipmentCompleteSerializer(serializers.ModelSerializer):
         request = self.context['request']
         user = request.user
 
-        # Extract provided tracking number (optional)
-        tracking_number = data.get('tracking_number', shipment.tracking_number)
-
         # Extract shipping date (defaults to today's date)
         shipment_date = data.get('shipment_date', datetime.now())
 
         shipment.complete_shipment(
             user,
-            tracking_number=tracking_number,
+            tracking_number=data.get('tracking_number', shipment.tracking_number),
+            invoice_number=data.get('invoice_number', shipment.invoice_number),
+            link=data.get('link', shipment.link),
             shipment_date=shipment_date,
         )
 
diff --git a/InvenTree/order/test_api.py b/InvenTree/order/test_api.py
index dd17a033c9..6be694bb11 100644
--- a/InvenTree/order/test_api.py
+++ b/InvenTree/order/test_api.py
@@ -1324,6 +1324,8 @@ class SalesOrderAllocateTest(OrderTest):
         response = self.post(
             url,
             {
+                'invoice_number': 'INV01234',
+                'link': 'http://test.com/link.html',
                 'tracking_number': 'TRK12345',
                 'shipment_date': '2020-12-05',
             },
@@ -1334,6 +1336,8 @@ class SalesOrderAllocateTest(OrderTest):
 
         self.assertTrue(self.shipment.is_complete())
         self.assertEqual(self.shipment.tracking_number, 'TRK12345')
+        self.assertEqual(self.shipment.invoice_number, 'INV01234')
+        self.assertEqual(self.shipment.link, 'http://test.com/link.html')
 
     def test_sales_order_shipment_list(self):
 
diff --git a/InvenTree/templates/js/translated/order.js b/InvenTree/templates/js/translated/order.js
index 5fa0d2f77a..03e967deee 100644
--- a/InvenTree/templates/js/translated/order.js
+++ b/InvenTree/templates/js/translated/order.js
@@ -55,6 +55,12 @@ function salesOrderShipmentFields(options={}) {
         tracking_number: {
             icon: 'fa-hashtag',
         },
+        invoice_number: {
+            icon: 'fa-dollar-sign',
+        },
+        link: {
+            icon: 'fa-link',
+        }
     };
 
     // If order is specified, hide the order field
@@ -129,11 +135,20 @@ function completeShipment(shipment_id, options={}) {
                 method: 'POST',
                 title: `{% trans "Complete Shipment" %} ${shipment.reference}`,
                 fields: {
-                    tracking_number: {
-                        value: shipment.tracking_number,
-                    },
                     shipment_date: {
                         value: moment().format('YYYY-MM-DD'),
+                    },
+                    tracking_number: {
+                        value: shipment.tracking_number,
+                        icon: 'fa-hashtag',
+                    },
+                    invoice_number: {
+                        value: shipment.invoice_number,
+                        icon: 'fa-dollar-sign',
+                    },
+                    link: {
+                        value: shipment.link,
+                        icon: 'fa-link',
                     }
                 },
                 preFormContent: html,
@@ -2445,10 +2460,26 @@ function loadSalesOrderShipmentTable(table, options={}) {
                 field: 'tracking_number',
                 title: '{% trans "Tracking" %}',
             },
+            {
+                field: 'invoice_number',
+                title: '{% trans "Invoice" %}',
+            },
+            {
+                field: 'link',
+                title: '{% trans "Link" %}',
+                formatter: function(value) {
+                    if (value) {
+                        return renderLink(value, value);
+                    } else {
+                        return '-';
+                    }
+                }
+            },
             {
                 field: 'notes',
                 title: '{% trans "Notes" %}',
                 visible: false,
+                switchable: false,
                 // TODO: Implement 'notes' field
             },
             {