diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 77e5f8f..2d5f9c6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v1
         with:
-          python-version: 3.7
+          python-version: 3.8
 
       - name: Install dependencies
         run: |
@@ -33,24 +33,24 @@ jobs:
       matrix:
         toxenv:
             - py36-dj111
-            - py36-dj20
-            - py36-dj21
             - py36-dj22
-            - py37-dj21
-            - py37-dj22
+            - py36-dj30
+            - py38-dj111
+            - py38-dj22
+            - py38-dj30
         include:
           - toxenv: py36-dj111
             python-version: 3.6
-          - toxenv: py36-dj20
-            python-version: 3.6
-          - toxenv: py36-dj21
-            python-version: 3.6
           - toxenv: py36-dj22
             python-version: 3.6
-          - toxenv: py37-dj21
-            python-version: 3.7
-          - toxenv: py37-dj22
-            python-version: 3.7
+          - toxenv: py36-dj30
+            python-version: 3.6
+          - toxenv: py38-dj111
+            python-version: 3.8
+          - toxenv: py38-dj22
+            python-version: 3.8
+          - toxenv: py38-dj30
+            python-version: 3.8
 
     steps:
       - uses: actions/checkout@v1
diff --git a/flags/tests/test_panels.py b/flags/tests/test_panels.py
index 4452906..31917f0 100644
--- a/flags/tests/test_panels.py
+++ b/flags/tests/test_panels.py
@@ -1,3 +1,4 @@
+from django.http import HttpResponse
 from django.test import RequestFactory, TestCase, override_settings
 
 from debug_toolbar.toolbar import DebugToolbar
@@ -7,7 +8,8 @@
 class FlagsPanelTestCase(TestCase):
     def setUp(self):
         self.request = RequestFactory().get("/")
-        self.toolbar = DebugToolbar(self.request)
+        self.get_response = lambda req: HttpResponse()
+        self.toolbar = DebugToolbar(self.request, self.get_response)
         self.toolbar.stats = {}
         self.panel = self.toolbar.get_panel_by_id("FlagsPanel")
 
@@ -23,7 +25,8 @@ def test_flags_panel_has_flags(self):
 class FlagChecksPanelTestCase(TestCase):
     def setUp(self):
         self.request = RequestFactory().get("/")
-        self.toolbar = DebugToolbar(self.request)
+        self.get_response = lambda req: HttpResponse()
+        self.toolbar = DebugToolbar(self.request, self.get_response)
         self.toolbar.stats = {}
         self.panel = self.toolbar.get_panel_by_id("FlagChecksPanel")
 
diff --git a/setup.py b/setup.py
index d722a05..27db22b 100644
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@
 testing_extras = [
     "mock>=2.0.0",
     "coverage>=3.7.0",
-    "django-debug-toolbar>=1.11,<1.12",
+    "django-debug-toolbar>=1.11,<2.3",
     "jinja2",
 ]
 
@@ -34,16 +34,16 @@
     extras_require={"testing": testing_extras, "docs": docs_extras},
     classifiers=[
         "Framework :: Django",
-        "Framework :: Django :: 1.11",
         "Framework :: Django :: 2.0",
         "Framework :: Django :: 2.1",
         "Framework :: Django :: 2.2",
+        "Framework :: Django :: 3.0",
         "License :: CC0 1.0 Universal (CC0 1.0) Public Domain Dedication",
         "License :: Public Domain",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
     ],
 )
diff --git a/tox.ini b/tox.ini
index 7cb0941..b0f7069 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 skipsdist=True
-envlist=lint,py{36}-dj{111},py{36,37}-dj{20,21,22}
+envlist=lint,py{36,38}-dj{111,22,30}
 
 [testenv]
 install_command=pip install -e ".[testing]" -U {opts} {packages}
@@ -13,13 +13,12 @@ setenv=
 
 basepython=
     py36: python3.6
-    py37: python3.7
+    py38: python3.8
 
 deps=
     dj111: Django>=1.11,<1.12
-    dj20: Django>=2.0,<2.1
-    dj21: Django>=2.1,<2.2
     dj22: Django>=2.2,<2.3
+    dj30: Django>=3.0,<3.1
 
 [testenv:lint]
 basepython=python3.6