diff --git a/cloudkitty/api/app.py b/cloudkitty/api/app.py
index 31a6c81a..0290eb40 100644
--- a/cloudkitty/api/app.py
+++ b/cloudkitty/api/app.py
@@ -20,11 +20,8 @@ import flask_restful
 from oslo_config import cfg
 from oslo_log import log
 from paste import deploy
-try:
-    from werkzeug.middleware import dispatcher
-# In case we have werkzeug<0.15
-except ImportError:
-    from werkzeug import wsgi as dispatcher
+
+from werkzeug.middleware import dispatcher
 
 from cloudkitty.api import root as api_root
 from cloudkitty.api.v1 import get_api_app as get_v1_app
diff --git a/cloudkitty/tests/api/v2/dataframes/test_dataframes.py b/cloudkitty/tests/api/v2/dataframes/test_dataframes.py
index d690b7d2..15c34635 100644
--- a/cloudkitty/tests/api/v2/dataframes/test_dataframes.py
+++ b/cloudkitty/tests/api/v2/dataframes/test_dataframes.py
@@ -12,6 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 #
+import flask
+
 from unittest import mock
 
 from cloudkitty.api.v2.dataframes import dataframes
@@ -28,12 +30,15 @@ class TestDataframeListEndpoint(tests.TestCase):
 
     def test_non_admin_request_is_filtered_on_project_id(self):
         policy_mock = mock.patch('cloudkitty.common.policy.authorize')
+
+        flask.request.context = mock.Mock()
+        flask.request.context.project_id = 'test-project'
+        flask.request.context.is_admin = False
+
         with mock.patch.object(self.endpoint._storage, 'retrieve') as ret_mock:
-            with policy_mock, mock.patch('flask.request') as fmock:
+            with policy_mock, mock.patch('flask.request.args.lists') as fmock:
                 ret_mock.return_value = {'total': 42, 'dataframes': []}
-                fmock.args.lists.return_value = []
-                fmock.context.is_admin = False
-                fmock.context.project_id = 'test-project'
+                fmock.return_value = []
                 self.endpoint.get()
                 ret_mock.assert_called_once_with(
                     begin=tzutils.get_month_start(),
diff --git a/cloudkitty/tests/api/v2/summary/test_summary.py b/cloudkitty/tests/api/v2/summary/test_summary.py
index 99ab9073..9c0413f8 100644
--- a/cloudkitty/tests/api/v2/summary/test_summary.py
+++ b/cloudkitty/tests/api/v2/summary/test_summary.py
@@ -12,6 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 #
+import flask
+import uuid
+
 from unittest import mock
 
 from cloudkitty.api.v2.summary import summary
@@ -28,10 +31,15 @@ class TestSummaryEndpoint(tests.TestCase):
 
     def test_type_filter_is_passed_separately(self):
         policy_mock = mock.patch('cloudkitty.common.policy.authorize')
+
+        flask.request.context = mock.Mock()
+        flask.request.context.project_id = str(uuid.uuid4())
+        flask.request.context.is_admin = True
+
         with mock.patch.object(self.endpoint._storage, 'total') as total_mock:
-            with policy_mock, mock.patch('flask.request') as fmock:
+            with policy_mock, mock.patch('flask.request.args.lists') as fmock:
                 total_mock.return_value = {'total': 0, 'results': []}
-                fmock.args.lists.return_value = [
+                fmock.return_value = [
                     ('filters', 'a:b,type:awesome')]
                 self.endpoint.get()
                 total_mock.assert_called_once_with(
diff --git a/cloudkitty/tests/api/v2/test_utils.py b/cloudkitty/tests/api/v2/test_utils.py
index 484bce38..69be8fcc 100644
--- a/cloudkitty/tests/api/v2/test_utils.py
+++ b/cloudkitty/tests/api/v2/test_utils.py
@@ -243,12 +243,12 @@ class AddInputSchemaTest(tests.TestCase):
         self.assertEqual(
             list(test_func.input_schema.schema.keys())[0], 'arg_one')
 
-        with mock.patch('flask.request') as m:
-            m.get_json.return_value = {}
+        with mock.patch('flask.request.get_json') as m:
+            m.return_value = {}
             test_func(self)
 
-        with mock.patch('flask.request') as m:
-            m.get_json.return_value = {'arg_one': 'one'}
+        with mock.patch('flask.request.get_json') as m:
+            m.return_value = {'arg_one': 'one'}
             test_func(self)
 
     def _test_multiple_add_input_schema_x(self, location):
diff --git a/lower-constraints.txt b/lower-constraints.txt
index 0aaa3ce9..e5703d45 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -27,8 +27,8 @@ stevedore==3.2.2 # Apache-2.0
 tooz==2.7.1 # Apache-2.0
 voluptuous==0.12.0 # BSD-3
 influxdb==5.3.1 # MIT
-Flask==1.1.2 # BSD
-Flask-RESTful==0.3.8 # BSD
+Flask==2.0.0 # BSD
+Flask-RESTful==0.3.9 # BSD
 cotyledon==1.7.3 # Apache-2.0
 futurist==2.3.0 # Apache-2.0
 bandit>=1.6.0 # Apache-2.0
diff --git a/requirements.txt b/requirements.txt
index 6f7e7c0b..2678a9fe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ stevedore>=3.2.2 # Apache-2.0
 tooz>=2.7.1 # Apache-2.0
 voluptuous>=0.12.0 # BSD License
 influxdb>=5.3.1 # MIT
-Flask>=1.1.2 # BSD
-Flask-RESTful>=0.3.8 # BSD
+Flask>=2.0.0 # BSD
+Flask-RESTful>=0.3.9 # BSD
 cotyledon>=1.7.3 # Apache-2.0
 futurist>=2.3.0 # Apache-2.0