diff --git a/dev-requirements.txt b/dev-requirements.txt
index 56a550ae8..ab44a1aef 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,4 +1,5 @@
 black==21.12b0
+bravado==11.0.3
 bravado_core==5.17.0
 flake8==4.0.1
 isort==5.10.1
@@ -14,4 +15,4 @@ tox==3.24.5
 WebTest==3.0.0
 wheel==0.37.1
 zest.releaser==6.22.2
-zope.sqlalchemy==1.6
\ No newline at end of file
+zope.sqlalchemy==1.6
diff --git a/requirements.txt b/requirements.txt
index a83bb4089..44c3bfb18 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ cornice==6.0.1
 cornice-swagger==1.0.1
 dockerflow==2021.7.0
 jsonpatch==1.32
-jsonschema==3.2.0
+jsonschema==4.4.0
 logging-color-formatter==1.0.2
 newrelic==7.2.4.171
 psycopg2-binary==2.9.3
diff --git a/setup.cfg b/setup.cfg
index 5a526ca1e..5a9c60a83 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -32,7 +32,7 @@ install_requires =
     cornice
     cornice_swagger
     dockerflow
-    jsonschema>=3.0.0
+    jsonschema
     jsonpatch
     logging-color-formatter
     python-dateutil
diff --git a/tests/openapi/support.py b/tests/openapi/support.py
index cd3abf395..3332d402e 100644
--- a/tests/openapi/support.py
+++ b/tests/openapi/support.py
@@ -1,5 +1,6 @@
 import unittest
 
+from bravado.requests_client import RequestsClient
 from bravado_core.request import IncomingRequest, unmarshal_request
 from bravado_core.resource import build_resources
 from bravado_core.response import OutgoingResponse, validate_response
@@ -22,6 +23,7 @@ def setUpClass(cls):
         super().setUpClass()
         cls.spec_dict = cls.app.get("/__api__").json
         bravado_config = {
+            # Use models (Python classes) instead of dicts for #/definitions/{models}
             # use_models causes us to break in bravado-core 4.13.0,
             # probably because of
             # https://github.com/Yelp/bravado-core/pull/254, and we
@@ -29,7 +31,9 @@ def setUpClass(cls):
             # here anyhow.
             "use_models": False
         }
-        cls.spec = Spec.from_dict(cls.spec_dict, config=bravado_config)
+        cls.spec = Spec.from_dict(
+            cls.spec_dict, http_client=RequestsClient(), config=bravado_config
+        )
         cls.resources = build_resources(cls.spec)
 
     @classmethod
diff --git a/tox.ini b/tox.ini
index ae38c96db..e7723bc63 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,6 +23,7 @@ commands =
     python --version
     py.test {posargs}
 deps =
+    bravado
     bravado_core
     pytest
     pytest-cache