diff --git a/scheduler/main/migrations/0002_schedule_uuid.py b/scheduler/main/migrations/0002_schedule_uuid.py
new file mode 100644
index 0000000000000000000000000000000000000000..07048feeb1f12c6f351d2597ee7d67ed326448c7
--- /dev/null
+++ b/scheduler/main/migrations/0002_schedule_uuid.py
@@ -0,0 +1,19 @@
+# Generated by Django 3.1.6 on 2021-02-22 14:39
+
+from django.db import migrations, models
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('main', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='schedule',
+            name='uuid',
+            field=models.UUIDField(default=uuid.uuid4, editable=False, unique=True),
+        ),
+    ]
diff --git a/scheduler/main/models.py b/scheduler/main/models.py
index 4a823d74e13013b6d40df55f31e050deb5a25225..dfd15a4ec35ebfb0e9b565f7045f5d518e446fbb 100644
--- a/scheduler/main/models.py
+++ b/scheduler/main/models.py
@@ -17,6 +17,7 @@
 # <http://www.gnu.org/licenses/>.
 
 import datetime
+import uuid
 
 from django.db import models
 from django.utils import formats
@@ -24,6 +25,7 @@ from django.utils.translation import gettext_lazy as _
 
 
 class Schedule(models.Model):
+    uuid = models.UUIDField(default=uuid.uuid4, unique=True, editable=False)
     title = models.CharField(_('Title'), max_length=254)
 
     def __str__(self):
diff --git a/scheduler/main/templates/main/schedule_form.html b/scheduler/main/templates/main/schedule_form.html
index 789536f0489ea52b348fbcc9d340d6bee4733f5b..8d436856f1de33f2ab9d7083ab7693e0bf8c1f56 100644
--- a/scheduler/main/templates/main/schedule_form.html
+++ b/scheduler/main/templates/main/schedule_form.html
@@ -69,7 +69,7 @@
             <div class="form-group">
                 <label for="id_schedule_id">{% translate 'Schedule ID' %}</label>
                 <div class="input-group">
-                    <input id="id_schedule_id" class="form-control" value="{{ object.pk }}" readonly>
+                    <input id="id_schedule_id" class="form-control" value="{{ object.uuid }}" readonly>
                     <div class="input-group-append">
                         <button type="button" class="btn btn-outline-secondary" tabindex="-1" data-clipboard="#id_schedule_id" data-animation="success">{% translate 'Copy' %}</button>
                     </div>
diff --git a/scheduler/main/views.py b/scheduler/main/views.py
index 6f59f9b287d0ffbeb8d852d14d405313c43d73bc..be429cac7d0d42f8e457b205a151a90a76b1661c 100644
--- a/scheduler/main/views.py
+++ b/scheduler/main/views.py
@@ -53,7 +53,7 @@ class ScheduleFormMixin(LoginRequiredMixin):
     form_class = ScheduleForm
 
     def get_success_url(self):
-        return reverse('schedule-update', args=[self.object.pk])
+        return reverse('schedule-update', args=[self.object.uuid])
 
     def form_valid(self, form, *args):
         messages.success(self.request, _('Data has been saved.'))
@@ -65,11 +65,14 @@ class ScheduleCreateView(ScheduleFormMixin, CreateView):
 
 
 class ScheduleUpdateView(ScheduleFormMixin, UpdateView):
-    pass
+    slug_field = 'uuid'
+    slug_url_kwarg = 'uuid'
 
 
 class ScheduleDeleteView(LoginRequiredMixin, DeleteView):
     model = Schedule
+    slug_field = 'uuid'
+    slug_url_kwarg = 'uuid'
 
     def get_success_url(self):
         return reverse('index')
@@ -85,7 +88,7 @@ class InvitationUpdateView(UpdateView):
         return get_object_or_404(Invitation, **self.kwargs)
 
     def get_success_url(self):
-        return reverse('invitation', args=[self.object.schedule.pk, self.object.token])
+        return reverse('invitation', args=[self.object.schedule.uuid, self.object.token])
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
@@ -150,6 +153,9 @@ class InvitationApiView(View):
         })
 
     def put(self, request, *args, **kwargs):
+        if 'schedule__uuid' in kwargs:
+            schedule = get_object_or_404(Schedule, uuid=kwargs.pop('schedule__uuid'))
+            kwargs['schedule_id'] = schedule.id
         invitation, _ = Invitation.objects.get_or_create(**kwargs)
         return HttpResponse(status=204)
 
diff --git a/scheduler/tests.py b/scheduler/tests.py
index a5220d33d526b67fcae2c2a99750332fb5ac9298..847d0ccb3a22dc66db84de9ab0a990d13ae77a61 100644
--- a/scheduler/tests.py
+++ b/scheduler/tests.py
@@ -7,7 +7,7 @@ from .main.models import Schedule
 from .main.models import Invitation
 
 
-class TestInvitationApiView(TestCase):
+class TestLegacyInvitationApiView(TestCase):
     def setUp(self):
         self.client.defaults['HTTP_AUTHORIZATION'] = 'token ' + settings.API_TOKEN
 
@@ -30,3 +30,28 @@ class TestInvitationApiView(TestCase):
         response = self.client.delete(url)
         self.assertEqual(response.status_code, 204)
         self.assertFalse(Invitation.objects.filter(token=invitation.token).exists())
+
+
+class TestInvitationApiView(TestCase):
+    def setUp(self):
+        self.client.defaults['HTTP_AUTHORIZATION'] = 'token ' + settings.API_TOKEN
+
+    def test_get(self):
+        invitation = baker.make(Invitation)
+        url = '/api/{}/{}/'.format(invitation.schedule.uuid, invitation.token)
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+    def test_put(self):
+        schedule = baker.make(Schedule)
+        url = '/api/{}/{}/'.format(schedule.uuid, 'sometoken')
+        response = self.client.put(url)
+        self.assertEqual(response.status_code, 204)
+        self.assertTrue(Invitation.objects.filter(token='sometoken').exists())
+
+    def test_delete(self):
+        invitation = baker.make(Invitation)
+        url = '/api/{}/{}/'.format(invitation.schedule.uuid, invitation.token)
+        response = self.client.delete(url)
+        self.assertEqual(response.status_code, 204)
+        self.assertFalse(Invitation.objects.filter(token=invitation.token).exists())
diff --git a/scheduler/urls.py b/scheduler/urls.py
index da2f6bdb4af9f72fab241df03377f817fb5e3984..38de4f39733ce57b933351f05ecc257ca5568dc0 100644
--- a/scheduler/urls.py
+++ b/scheduler/urls.py
@@ -35,16 +35,28 @@ from .main.views import ScheduleUpdateView
 urlpatterns = [
     path('', ScheduleListView.as_view(), name='index'),
     path('new/', ScheduleCreateView.as_view(), name='schedule-create'),
-    path('<int:pk>/', ScheduleUpdateView.as_view(), name='schedule-update'),
-    path('<int:pk>/delete/', ScheduleDeleteView.as_view(), name='schedule-delete'),
+    path('<int:pk>/', ScheduleUpdateView.as_view(), name='schedule-update-legacy'),
+    path('<uuid:uuid>/', ScheduleUpdateView.as_view(), name='schedule-update'),
+    path('<int:pk>/delete/', ScheduleDeleteView.as_view(), name='schedule-delete-legacy'),
+    path('<uuid:uuid>/delete/', ScheduleDeleteView.as_view(), name='schedule-delete'),
     path(
         'invitations/<int:schedule_id>/<token>/',
         InvitationUpdateView.as_view(),
+        name='invitation-legacy',
+    ),
+    path(
+        'invitations/<uuid:schedule__uuid>/<token>/',
+        InvitationUpdateView.as_view(),
         name='invitation',
     ),
     path(
         'api/<int:schedule_id>/<token>/',
         InvitationApiView.as_view(),
+        name='api-invitation-legacy',
+    ),
+    path(
+        'api/<uuid:schedule__uuid>/<token>/',
+        InvitationApiView.as_view(),
         name='api-invitation',
     ),
     path('login/', LoginView.as_view(), name='login'),