diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 9bc9ae6..def60f1 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -12,7 +12,8 @@ jobs:
     
     strategy:
       matrix:
-        python-version: [ "3.7", "3.8", "3.9" ]
+        python-version: [ "3.8", "3.9", "3.10", "3.11" ]
+        django-version: [ "3.2.*", "4.2.*" ]
 
     steps:
       - uses: actions/checkout@v4
@@ -21,12 +22,12 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - name: install dependencies
         run: |
-          pip install django==3.2.* 
+          pip install django==${{ matrix.django-version }}
           pip install -e .
           pip install coverage coveralls
       - name: run tests
         run: |
-          coverage run --source='django_prbac' `which django-admin.py` test django_prbac --settings django_prbac.mock_settings --traceback
+          coverage run --source='django_prbac' `which django-admin` test django_prbac --settings django_prbac.mock_settings --traceback
       - name: report coverage stats
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.gitignore b/.gitignore
index b20c1f5..3c77127 100644
--- a/.gitignore
+++ b/.gitignore
@@ -56,3 +56,6 @@ nosetests.xml
 
 /docs/_build
 /django-prbac.db
+
+# virtualenv
+.python-version
diff --git a/django_prbac/models.py b/django_prbac/models.py
index 0f88fd3..9ab78fe 100644
--- a/django_prbac/models.py
+++ b/django_prbac/models.py
@@ -144,8 +144,12 @@ def get_privileges(self, assignment):
                 return self._granted_privileges
             except AttributeError:
                 pass
-        return [membership.instantiated_to_role(assignment)
-                for membership in self.memberships_granted.all()]
+        try:
+            memberships = self.memberships_granted.all()
+        except ValueError:
+            # Django 4 raises ValueError if fk relationship is accessed prior to save
+            return []
+        return [m.instantiated_to_role(assignment) for m in memberships]
 
     def instantiate(self, assignment):
         """
diff --git a/django_prbac/urls.py b/django_prbac/urls.py
index d69c573..5f4d44e 100644
--- a/django_prbac/urls.py
+++ b/django_prbac/urls.py
@@ -1,8 +1,8 @@
-from django.conf.urls import url
+from django.urls import re_path
 from django.contrib import admin
 
 admin.autodiscover()
 
 urlpatterns = [
-    url(r'^admin/', admin.site.urls),
+    re_path(r'^admin/', admin.site.urls),
 ]
diff --git a/setup.py b/setup.py
index a188f37..14d5da4 100644
--- a/setup.py
+++ b/setup.py
@@ -30,9 +30,9 @@ def get_readme():
     packages=find_packages(),
     zip_safe=False,
     install_requires=[
-        # avoid django 2 <2.2.10 and django 3 < 3.0.7
+        # avoid django 3 < 3.0.7
         # https://github.com/advisories/GHSA-hmr4-m2h5-33qx
-        'django>=2.2.13,!=3.0.0,!=3.0.1,!=3.0.2,!=3.0.3,!=3.0.4,!=3.0.5,!=3.0.6,<4',
+        'django>=3.0.7,<5',
         'jsonfield>=1.0.3,<4',
         'simplejson',
     ],
@@ -45,9 +45,10 @@ def get_readme():
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
+        'Programming Language :: Python :: 3.11',
         'Topic :: Software Development :: Libraries :: Python Modules',
     ],
     options={"bdist_wheel": {"universal": "1"}},