diff --git a/CHANGELOG.md b/CHANGELOG.md
index 678181546f..dbc6e48ac1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Breaking Changes
 
-- [#9604](https://github.com/inventree/InvenTree/pull/9604) - refactors user API endpoint to be less ambiguous
+- [#12107](https://github.com/inventree/InvenTree/pull/12107) makes a breaking change to the `SalesOrderStatusGroups` enum, fixing a bug where the "shipped" status was not included in the "active" group. This change may affect any external client applications which make use of the `SalesOrderStatusGroups` enum, as the "shipped" status will now be included in the "active" group instead of the "complete" group. If you are using this enum in an external client application, you will need to update your application to account for this change.
+- [#9604](https://github.com/inventree/InvenTree/pull/9604) refactors user API endpoint to be less ambiguous
 - [#11893](https://github.com/inventree/InvenTree/pull/11893) bumps Node environment to version 24 LTS - this is only relevant if you build the frontend assets yourself
 
 ### Added
diff --git a/src/backend/InvenTree/order/fixtures/sales_order.yaml b/src/backend/InvenTree/order/fixtures/sales_order.yaml
index dfffb25fd4..9d32bd2d3b 100644
--- a/src/backend/InvenTree/order/fixtures/sales_order.yaml
+++ b/src/backend/InvenTree/order/fixtures/sales_order.yaml
@@ -38,6 +38,14 @@
     customer: 5
     status: 60  # Returned
 
+- model: order.salesorder
+  pk: 6
+  fields:
+    reference: 'ABC128'
+    description: "One sales order, please"
+    customer: 5
+    status: 30  # Complete
+
 # 1 x R_4K7_0603
 - model: order.salesorderlineitem
   pk: 1
diff --git a/src/backend/InvenTree/order/status_codes.py b/src/backend/InvenTree/order/status_codes.py
index d8893a1fa3..170a4a2a44 100644
--- a/src/backend/InvenTree/order/status_codes.py
+++ b/src/backend/InvenTree/order/status_codes.py
@@ -63,10 +63,11 @@ class SalesOrderStatusGroups:
         SalesOrderStatus.PENDING.value,
         SalesOrderStatus.ON_HOLD.value,
         SalesOrderStatus.IN_PROGRESS.value,
+        SalesOrderStatus.SHIPPED.value,
     ]
 
     # Completed orders
-    COMPLETE = [SalesOrderStatus.SHIPPED.value, SalesOrderStatus.COMPLETE.value]
+    COMPLETE = [SalesOrderStatus.COMPLETE.value]
 
 
 class ReturnOrderStatus(StatusCode):
diff --git a/src/backend/InvenTree/order/test_api.py b/src/backend/InvenTree/order/test_api.py
index 508d1849ee..4e4347a92e 100644
--- a/src/backend/InvenTree/order/test_api.py
+++ b/src/backend/InvenTree/order/test_api.py
@@ -1458,19 +1458,21 @@ class SalesOrderTest(OrderTest):
     def test_so_list(self):
         """Test the SalesOrder list API endpoint."""
         # All orders
-        self.filter({}, 5)
+        self.filter({}, 6)
 
         # Filter by customer
         self.filter({'customer': 4}, 3)
-        self.filter({'customer': 5}, 2)
+        self.filter({'customer': 5}, 3)
 
         # Filter by outstanding
-        self.filter({'outstanding': True}, 3)
+        self.filter({'outstanding': True}, 4)
         self.filter({'outstanding': False}, 2)
 
         # Filter by status
-        self.filter({'status': SalesOrderStatus.PENDING.value}, 3)  # PENDING
-        self.filter({'status': SalesOrderStatus.SHIPPED.value}, 1)  # SHIPPED
+        self.filter({'status': SalesOrderStatus.PENDING.value}, 3)
+        self.filter({'status': SalesOrderStatus.SHIPPED.value}, 1)
+        self.filter({'status': SalesOrderStatus.COMPLETE.value}, 1)
+        self.filter({'status': SalesOrderStatus.CANCELLED.value}, 0)
         self.filter({'status': 99}, 0)  # Invalid
 
         # Filter by "reference"
@@ -1479,7 +1481,7 @@ class SalesOrderTest(OrderTest):
 
         # Filter by "assigned_to_me"
         self.filter({'assigned_to_me': 1}, 0)
-        self.filter({'assigned_to_me': 0}, 5)
+        self.filter({'assigned_to_me': 0}, 6)
 
     def test_total_price(self):
         """Unit tests for the 'total_price' field."""
@@ -1553,7 +1555,7 @@ class SalesOrderTest(OrderTest):
     def test_overdue(self):
         """Test "overdue" status."""
         self.filter({'overdue': True}, 0)
-        self.filter({'overdue': False}, 5)
+        self.filter({'overdue': False}, 6)
 
         for pk in [1, 2]:
             order = models.SalesOrder.objects.get(pk=pk)
@@ -1561,7 +1563,7 @@ class SalesOrderTest(OrderTest):
             order.save()
 
         self.filter({'overdue': True}, 2)
-        self.filter({'overdue': False}, 3)
+        self.filter({'overdue': False}, 4)
 
     def test_so_detail(self):
         """Test the SalesOrder detail endpoint."""