diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 472e8d0..358993a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,19 +35,19 @@ jobs:
         run: cd alfresco && docker-compose up -d
 
       - name: Install dependencies
-        run: pip install tox tox-gh-actions codecov
+        run: pip install tox tox-gh-actions
 
       - name: Run tests
-        run: |
-          export TOXENV=py${PYTHON_VERSION/./}-django${DJANGO/./}-$(echo $CMIS_BINDING | tr '[:upper:]' '[:lower:]')
-          tox
-          codecov -e TOXENV,DJANGO --file reports/coverage-${TOXENV}.xml
+        run: tox
         env:
           PYTHON_VERSION: ${{ matrix.python }}
           DJANGO: ${{ matrix.django }}
           CMIS_BINDING: ${{ matrix.binding }}
           CMIS_URL_MAPPING_ENABLED: ${{ matrix.cmisurlmapping }}
 
+      - name: Publish coverage report
+        uses: codecov/codecov-action@v3
+
   publish:
     name: Publish package to PyPI
     runs-on: ubuntu-latest
diff --git a/drc_cmis/models.py b/drc_cmis/models.py
index 2d859b4..34a3a25 100644
--- a/drc_cmis/models.py
+++ b/drc_cmis/models.py
@@ -5,7 +5,6 @@
 from django.utils.translation import gettext_lazy as _
 
 import pytz
-from djchoices import ChoiceItem, DjangoChoices
 from solo.models import SingletonModel
 
 from .utils.exceptions import NoOtherBaseFolderException, NoZaakBaseFolderException
@@ -99,9 +98,9 @@ def get_other_base_folder_name(self) -> str:
         raise ImproperlyConfigured("The 'other_folder_path' must be configured.")
 
 
-class Vendor(DjangoChoices):
-    alfresco = ChoiceItem()
-    bct = ChoiceItem()
+class Vendor(models.TextChoices):
+    alfresco = "alfresco"
+    bct = "bct"
 
 
 class UrlMapping(models.Model):
diff --git a/setup.cfg b/setup.cfg
index 95fb619..467bd13 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -31,7 +31,6 @@ include_package_data = True
 packages = find:
 install_requires =
     django>=3.2.0,<4.0
-    django-choices
     cmislib-maykin >= 0.7.2.dev0
     django-solo
     iso8601
diff --git a/tests/test_clients.py b/tests/test_clients.py
index eeebb61..6bde551 100644
--- a/tests/test_clients.py
+++ b/tests/test_clients.py
@@ -1531,7 +1531,7 @@ def test_full_update_gebruiksrechten(self):
 
         # Create gebruiksrechten
         gebruiksrechten_data = {
-            "informatieobject": f"https://testserver/api/v1/documenten/{document.uuid}",
+            "informatieobject": f"https://drc.utrechtproeftuin.nl/api/v1/documenten/{document.uuid}",
             "startdatum": "2018-12-24T00:00:00Z",
             "omschrijving_voorwaarden": "Test voorwaarden",
         }
@@ -1543,7 +1543,7 @@ def test_full_update_gebruiksrechten(self):
         self.assertEqual("Test voorwaarden", gebruiksrechten.omschrijving_voorwaarden)
 
         updated_data = {
-            "informatieobject": f"https://testserver/api/v1/documenten/{document.uuid}",
+            "informatieobject": f"https://drc.utrechtproeftuin.nl/api/v1/documenten/{document.uuid}",
             "startdatum": "2018-12-24T00:00:00Z",
             "omschrijving_voorwaarden": "Aangepaste voorwaarden",
         }
@@ -1582,7 +1582,7 @@ def test_partial_update_gebruiksrechten(self):
 
         # Create gebruiksrechten
         gebruiksrechten_data = {
-            "informatieobject": f"https://testserver/api/v1/documenten/{document.uuid}",
+            "informatieobject": f"https://drc.utrechtproeftuin.nl/api/v1/documenten/{document.uuid}",
             "startdatum": "2018-12-24T00:00:00Z",
             "omschrijving_voorwaarden": "Test voorwaarden",
         }