diff --git a/tecken/api/forms.py b/tecken/api/forms.py
index e00d9efa3..f5a8df004 100644
--- a/tecken/api/forms.py
+++ b/tecken/api/forms.py
@@ -154,6 +154,9 @@ def _clean_dates(self, values):
             rest = operators.sub('', block).strip()
             if rest.lower() in ('null', 'incomplete'):
                 date_obj = None
+            elif rest.lower() == 'cancelled':
+                # Exceptional exception
+                date_obj = 'cancelled'
             else:
                 try:
                     date_obj = dateutil.parser.parse(rest)
diff --git a/tecken/api/views.py b/tecken/api/views.py
index 538802cc2..d6b1f73f4 100644
--- a/tecken/api/views.py
+++ b/tecken/api/views.py
@@ -328,7 +328,9 @@ def uploads(request):
         qs = qs.filter(**{orm_operator: value})
     for key in ('created_at', 'completed_at'):
         for operator, value in form.cleaned_data.get(key, []):
-            if value is None:
+            if value == 'cancelled':
+                qs = qs.filter(cancelled_at__isnull=False)
+            elif value is None:
                 orm_operator = f'{key}__isnull'
                 qs = qs.filter(**{orm_operator: True})
             elif operator == '=' and value.hour == 0 and value.minute == 0:
diff --git a/tests/test_api.py b/tests/test_api.py
index 7f44c4d18..109da4449 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -616,6 +616,22 @@ def test_uploads(client):
     data = response.json()
     assert not data['uploads']
 
+    # Filter by cancelled
+    response = client.get(url, {
+        'completed_at': 'Cancelled',
+    })
+    assert response.status_code == 200
+    data = response.json()
+    assert not data['uploads']
+    upload.cancelled_at = timezone.now()
+    upload.save()
+    response = client.get(url, {
+        'completed_at': 'Cancelled',
+    })
+    assert response.status_code == 200
+    data = response.json()
+    assert data['uploads']
+
 
 @pytest.mark.django_db
 def test_upload(client):