diff --git a/modoboa/admin/api.py b/modoboa/admin/api.py
index b50cef20c..b3295152f 100644
--- a/modoboa/admin/api.py
+++ b/modoboa/admin/api.py
@@ -31,7 +31,6 @@ class DomainViewSet(viewsets.ModelViewSet):
 
     permission_classes = [IsAuthenticated, DjangoModelPermissions, ]
     serializer_class = serializers.DomainSerializer
-    http_method_names = ["get", "post", "put", "delete"]
 
     def get_queryset(self):
         """Filter queryset based on current user."""
diff --git a/modoboa/admin/serializers.py b/modoboa/admin/serializers.py
index d5e2ac88c..009b475d6 100644
--- a/modoboa/admin/serializers.py
+++ b/modoboa/admin/serializers.py
@@ -34,9 +34,9 @@ class DomainSerializer(serializers.ModelSerializer):
         fields = (
             "pk", "name", "quota", "default_mailbox_quota", "enabled", "type",
             "enable_dkim", "dkim_key_selector", "dkim_key_length",
-            "dkim_public_key"
+            "dkim_public_key", "dkim_private_key_path"
         )
-        read_only_fields = ("pk", "dkim_public_key", )
+        read_only_fields = ("pk", )
 
     def validate_name(self, value):
         """Check name constraints."""
diff --git a/modoboa/admin/templates/admin/domain_detail.html b/modoboa/admin/templates/admin/domain_detail.html
index 96dafeb9c..fbebca6ab 100644
--- a/modoboa/admin/templates/admin/domain_detail.html
+++ b/modoboa/admin/templates/admin/domain_detail.html
@@ -106,6 +106,7 @@
               <button type="button" class="btn btn-primary btn-xs" data-toggle="modal" data-target="#domain_dkim_key">
                 {% trans "Show key" %}
               </button>
+              <a id="refresh_dkim_key" class="btn btn-default btn-xs" href="#" title="{% trans 'Generate new key' %}"><span class="fa fa-refresh"></span></a>
             {% else %}
               {% trans "Not generated" %}
             {% endif %}
@@ -148,3 +149,25 @@
     </div>
   {% endif %}
 {% endblock %}
+
+{% block extra_js %}
+  {{ block.super }}
+  <script type="text/javascript">
+  $(document).ready(function () {
+      $('#refresh_dkim_key').click(function (evt) {
+          evt.preventDefault();
+          var $this = $(this);
+          $.ajax({
+              url: '/api/v1/domains/{{ domain.pk }}/',
+              method: 'PATCH',
+              data: {
+                  dkim_public_key: '',
+                  dkim_private_key_path: ''
+              }
+          }).done(function (response) {
+              window.location.reload();
+          });
+      });
+  });
+  </script>
+{% endblock %}
diff --git a/modoboa/admin/tests/test_api.py b/modoboa/admin/tests/test_api.py
index c32260ead..d57b657bb 100644
--- a/modoboa/admin/tests/test_api.py
+++ b/modoboa/admin/tests/test_api.py
@@ -130,6 +130,15 @@ class DomainAPITestCase(ModoAPITestCase):
             models.Mailbox.objects.filter(
                 address="user", domain__name="test42.com").exists())
 
+    def test_patch_domain(self):
+        """Check domain partial update."""
+        domain = models.Domain.objects.get(name="test.com")
+        url = reverse("api:domain-detail", args=[domain.pk])
+        response = self.client.put(url, {"name": "toto.test"})
+        self.assertEqual(response.status_code, 200)
+        domain.refresh_from_db()
+        self.assertEqual(domain.name, "toto.test")
+
     def test_delete_domain(self):
         """Try to delete a domain."""
         domain = models.Domain.objects.get(name="test.com")