diff --git a/layerindex/models.py b/layerindex/models.py
index 1d72c55..d071788 100644
--- a/layerindex/models.py
+++ b/layerindex/models.py
@@ -334,6 +334,17 @@ class LayerBranch(models.Model):
     def test_file_url(self):
         return self.file_url('conf/layer.conf')
 
+    def updates_disabled_reason(self):
+        """Why the update script no longer updates this layer branch, if it
+        doesn't"""
+        if self.layer.status == 'X':
+            return 'Updates are disabled for this layer'
+        if not self.branch.updates_enabled:
+            return 'Updates are disabled for the %s branch' % self.branch.name
+        if not self.updates_enabled:
+            return 'Updates are disabled for this layer on the %s branch' % self.branch.name
+        return ''
+
     def get_checkout_branch(self):
         """Get the branch that we actually need to check out in the repo"""
         if self.actual_branch:
diff --git a/layerindex/static/css/additional.css b/layerindex/static/css/additional.css
index a3c0a3a..dcab5cd 100644
--- a/layerindex/static/css/additional.css
+++ b/layerindex/static/css/additional.css
@@ -321,3 +321,11 @@ td.info {
     height: 400px;
     overflow-y: scroll;
 }
+
+/* "not updated" label: lighter than label-default, still readable. It also
+   has label-default, so a browser with an older copy of this file still
+   shows it. */
+.label-default.label-not-updated {
+    background-color: #e8e8e8;
+    color: #555;
+}
diff --git a/layerindex/views.py b/layerindex/views.py
index 592311f..85c82d6 100644
--- a/layerindex/views.py
+++ b/layerindex/views.py
@@ -443,7 +443,7 @@ class LayerListView(ListView):
 
     def get_queryset(self):
         _check_url_branch(self.kwargs)
-        return LayerBranch.objects.filter(branch__name=self.kwargs['branch']).filter(layer__status__in=['P', 'X']).order_by('layer__layer_type', '-layer__index_preference', 'layer__name')
+        return LayerBranch.objects.filter(branch__name=self.kwargs['branch']).filter(layer__status__in=['P', 'X']).select_related('branch').order_by('layer__layer_type', '-layer__index_preference', 'layer__name')
 
     def get_context_data(self, **kwargs):
         context = super(LayerListView, self).get_context_data(**kwargs)
diff --git a/templates/layerindex/detail.html b/templates/layerindex/detail.html
index 6c20f47..b14d030 100644
--- a/templates/layerindex/detail.html
+++ b/templates/layerindex/detail.html
@@ -125,6 +125,13 @@
                     <span class="text-muted"><small>Last commit: {{ layerbranch.vcs_last_commit|timesince }} ago ({{ layerbranch.get_checkout_branch }} branch)</small></span>
                     </p>
                     {% endif %}
+                    {% with reason=layerbranch.updates_disabled_reason %}
+                    {% if reason %}
+                    <p>
+                    <span class="label label-default label-not-updated">not updated</span> <small class="text-muted">{{ reason }}, so the information here may be out of date.</small>
+                    </p>
+                    {% endif %}
+                    {% endwith %}
 
                     {% if layerbranch.active_maintainers.count > 0 %}
                     <h3>{% if layerbranch.active_maintainers|length == 1 %}Maintainer{% else %}Maintainers{% endif %}</h3>
diff --git a/templates/layerindex/layers.html b/templates/layerindex/layers.html
index daae8cb..fb07d90 100644
--- a/templates/layerindex/layers.html
+++ b/templates/layerindex/layers.html
@@ -75,6 +75,7 @@
                     {% for layerbranch in layerbranch_list %}
                     <tr class="layertype_{{ layerbranch.layer.layer_type }}">
                         <td><a href="{% url 'layer_item' url_branch layerbranch.layer.name %}">{{ layerbranch.layer.name }}</a>
+                            {% with reason=layerbranch.updates_disabled_reason %}{% if reason %}<span class="label label-default label-not-updated" title="{{ reason }}">not updated</span>{% endif %}{% endwith %}
                             {% if layerbranch.yp_compatible_version %}
                             <a href="{{layerbranch.yp_compatible_version.link_url}}"><img src="{{layerbranch.yp_compatible_version.image_url}}" alt="{{layerbranch.yp_compatible_version.description}}" class="yp-icon" title="{{layerbranch.yp_compatible_version.description}}" ></a>
                             {% endif %}
diff --git a/tests/test_updates_disabled.py b/tests/test_updates_disabled.py
new file mode 100644
index 0000000..7fcdf50
--- /dev/null
+++ b/tests/test_updates_disabled.py
@@ -0,0 +1,45 @@
+# layerindex-web - test the indication that a layer branch is no longer updated
+#
+# Licensed under the MIT license, see COPYING.MIT for details
+#
+# SPDX-License-Identifier: MIT
+
+import pytest
+from django.urls import reverse
+
+from layerindex.models import Branch, LayerBranch, LayerItem
+
+
+def make(name, status='P'):
+    master, _ = Branch.objects.get_or_create(name='master', defaults={'bitbake_branch': 'master'})
+    layer = LayerItem.objects.create(name=name, status=status, layer_type='A', summary=name,
+                                     description=name, vcs_url='git://example.com/%s.git' % name)
+    return LayerBranch.objects.create(layer=layer, branch=master)
+
+
+@pytest.mark.django_db
+def test_updates_disabled_reason():
+    # [YOCTO #14781] updates can be off for the layer, the branch or the layer branch
+    lb = make('meta-a')
+    assert lb.updates_disabled_reason() == ''
+    lb.updates_enabled = False
+    assert lb.updates_disabled_reason() == 'Updates are disabled for this layer on the master branch'
+    lb.branch.updates_enabled = False
+    assert lb.updates_disabled_reason() == 'Updates are disabled for the master branch'
+    lb.layer.status = 'X'
+    assert lb.updates_disabled_reason() == 'Updates are disabled for this layer'
+
+
+@pytest.mark.django_db
+def test_not_updated_label_on_layer_pages(client):
+    make('meta-updated')
+    make('meta-stale', status='X')
+    layers = client.get(reverse('layer_list', args=('master',))).content.decode()
+    assert layers.count('>not updated</span>') == 1
+    assert 'title="Updates are disabled for this layer"' in layers
+
+    page = client.get(reverse('layer_item', args=('master', 'meta-stale'))).content.decode()
+    assert 'not updated</span>' in page
+    assert 'Updates are disabled for this layer, so the information here may be out of date.' in page
+    page = client.get(reverse('layer_item', args=('master', 'meta-updated'))).content.decode()
+    assert 'not updated</span>' not in page