diff --git a/openapi_core/contrib/django/compat.py b/openapi_core/contrib/django/compat.py
index 7459c9b0..fa521179 100644
--- a/openapi_core/contrib/django/compat.py
+++ b/openapi_core/contrib/django/compat.py
@@ -4,12 +4,18 @@
 )
 
 
-def get_headers(req):
+def get_request_headers(req):
     # in Django 1 headers is not defined
     return req.headers if hasattr(req, 'headers') else \
         HttpHeaders(req.META)
 
 
+def get_response_headers(resp):
+    # in Django 2 headers is not defined
+    return resp.headers if hasattr(resp, 'headers') else \
+        dict(resp._headers.values())
+
+
 def get_current_scheme_host(req):
     # in Django 1 _current_scheme_host is not defined
     return req._current_scheme_host if hasattr(req, '_current_scheme_host') \
diff --git a/openapi_core/contrib/django/requests.py b/openapi_core/contrib/django/requests.py
index d674657c..ace403ea 100644
--- a/openapi_core/contrib/django/requests.py
+++ b/openapi_core/contrib/django/requests.py
@@ -4,7 +4,7 @@
 from six.moves.urllib.parse import urljoin
 
 from openapi_core.contrib.django.compat import (
-    get_headers, get_current_scheme_host,
+    get_request_headers, get_current_scheme_host,
 )
 from openapi_core.validation.request.datatypes import (
     RequestParameters, OpenAPIRequest,
@@ -39,7 +39,7 @@ def create(cls, request):
             path_pattern = '/' + route
 
         path = request.resolver_match and request.resolver_match.kwargs or {}
-        headers = get_headers(request)
+        headers = get_request_headers(request)
         parameters = RequestParameters(
             path=path,
             query=request.GET,
diff --git a/openapi_core/contrib/django/responses.py b/openapi_core/contrib/django/responses.py
index efbe69d3..8c436897 100644
--- a/openapi_core/contrib/django/responses.py
+++ b/openapi_core/contrib/django/responses.py
@@ -1,4 +1,5 @@
 """OpenAPI core contrib django responses module"""
+from openapi_core.contrib.django.compat import get_response_headers
 from openapi_core.validation.response.datatypes import OpenAPIResponse
 
 
@@ -7,8 +8,10 @@ class DjangoOpenAPIResponseFactory(object):
     @classmethod
     def create(cls, response):
         mimetype = response["Content-Type"]
+        headers = get_response_headers(response)
         return OpenAPIResponse(
             data=response.content,
             status_code=response.status_code,
+            headers=headers.items(),
             mimetype=mimetype,
         )
diff --git a/openapi_core/contrib/falcon/responses.py b/openapi_core/contrib/falcon/responses.py
index cc996920..8b28f09a 100644
--- a/openapi_core/contrib/falcon/responses.py
+++ b/openapi_core/contrib/falcon/responses.py
@@ -19,5 +19,6 @@ def create(cls, response):
         return OpenAPIResponse(
             data=data,
             status_code=status_code,
+            headers=response.headers,
             mimetype=mimetype,
         )
diff --git a/openapi_core/contrib/flask/responses.py b/openapi_core/contrib/flask/responses.py
index 73e7605b..c6a1cffb 100644
--- a/openapi_core/contrib/flask/responses.py
+++ b/openapi_core/contrib/flask/responses.py
@@ -9,5 +9,6 @@ def create(cls, response):
         return OpenAPIResponse(
             data=response.data,
             status_code=response._status_code,
+            headers=response.headers,
             mimetype=response.mimetype,
         )
diff --git a/openapi_core/contrib/requests/responses.py b/openapi_core/contrib/requests/responses.py
index 502d6b9b..6f3c324a 100644
--- a/openapi_core/contrib/requests/responses.py
+++ b/openapi_core/contrib/requests/responses.py
@@ -7,8 +7,10 @@ class RequestsOpenAPIResponseFactory(object):
     @classmethod
     def create(cls, response):
         mimetype = response.headers.get('Content-Type')
+        headers = dict(response.headers)
         return OpenAPIResponse(
             data=response.content,
             status_code=response.status_code,
+            headers=headers,
             mimetype=mimetype,
         )
diff --git a/tests/integration/contrib/django/data/djangoproject/testapp/views.py b/tests/integration/contrib/django/data/djangoproject/testapp/views.py
index fa8448a6..e28a80af 100644
--- a/tests/integration/contrib/django/data/djangoproject/testapp/views.py
+++ b/tests/integration/contrib/django/data/djangoproject/testapp/views.py
@@ -30,6 +30,7 @@ def get(self, request, pk):
             "test": "test_val",
         }
         django_response = JsonResponse(response_dict)
+        django_response['X-Rate-Limit'] = '12'
 
         openapi_response = DjangoOpenAPIResponse(django_response)
         validator = ResponseValidator(spec)
diff --git a/tests/integration/contrib/django/data/openapi.yaml b/tests/integration/contrib/django/data/openapi.yaml
index 37ba7be6..58c8ec57 100644
--- a/tests/integration/contrib/django/data/openapi.yaml
+++ b/tests/integration/contrib/django/data/openapi.yaml
@@ -17,6 +17,12 @@ paths:
                     type: string
                 required:
                   - test
+          headers:
+            X-Rate-Limit:
+              description: Rate limit
+              schema:
+                type: integer
+              required: true
       parameters:
         - required: true
           in: path
diff --git a/tests/integration/contrib/falcon/conftest.py b/tests/integration/contrib/falcon/conftest.py
index 5ad05030..66d209de 100644
--- a/tests/integration/contrib/falcon/conftest.py
+++ b/tests/integration/contrib/falcon/conftest.py
@@ -40,11 +40,13 @@ def create_request(
 @pytest.fixture
 def response_factory(environ_factory):
     def create_response(
-            data, status_code=200, content_type='application/json'):
+            data, status_code=200, headers=None,
+            content_type='application/json'):
         options = ResponseOptions()
         resp = Response(options)
         resp.body = data
         resp.content_type = content_type
         resp.status = HTTP_200
+        resp.set_headers(headers or {})
         return resp
     return create_response
diff --git a/tests/integration/contrib/falcon/data/v3.0/falcon_factory.yaml b/tests/integration/contrib/falcon/data/v3.0/falcon_factory.yaml
index d6b5e4be..295f3670 100644
--- a/tests/integration/contrib/falcon/data/v3.0/falcon_factory.yaml
+++ b/tests/integration/contrib/falcon/data/v3.0/falcon_factory.yaml
@@ -32,6 +32,12 @@ paths:
                 properties:
                   data:
                     type: string
+          headers:
+            X-Rate-Limit:
+              description: Rate limit
+              schema:
+                type: integer
+              required: true
         default:
           description: Return errors.
           content:
diff --git a/tests/integration/contrib/falcon/test_falcon_middlewares.py b/tests/integration/contrib/falcon/test_falcon_middlewares.py
index a2348357..cbfce002 100644
--- a/tests/integration/contrib/falcon/test_falcon_middlewares.py
+++ b/tests/integration/contrib/falcon/test_falcon_middlewares.py
@@ -68,6 +68,7 @@ def view_response_callable(request, response, id):
             response.content_type = MEDIA_HTML
             response.status = HTTP_200
             response.body = 'success'
+            response.set_header('X-Rate-Limit', '12')
         self.view_response_callable = view_response_callable
         headers = {'Content-Type': 'application/json'}
         result = client.simulate_get(
@@ -193,6 +194,7 @@ def view_response_callable(request, response, id):
             response.body = dumps({
                 'data': 'data',
             })
+            response.set_header('X-Rate-Limit', '12')
         self.view_response_callable = view_response_callable
 
         headers = {'Content-Type': 'application/json'}
diff --git a/tests/integration/contrib/falcon/test_falcon_validation.py b/tests/integration/contrib/falcon/test_falcon_validation.py
index 9e5466cf..c54f448c 100644
--- a/tests/integration/contrib/falcon/test_falcon_validation.py
+++ b/tests/integration/contrib/falcon/test_falcon_validation.py
@@ -21,7 +21,10 @@ def test_response_validator_path_pattern(self,
         validator = ResponseValidator(spec)
         request = request_factory('GET', '/browse/12', subdomain='kb')
         openapi_request = FalconOpenAPIRequestFactory.create(request)
-        response = response_factory('{"data": "data"}', status_code=200)
+        response = response_factory(
+            '{"data": "data"}',
+            status_code=200, headers={'X-Rate-Limit': '12'},
+        )
         openapi_response = FalconOpenAPIResponseFactory.create(response)
         result = validator.validate(openapi_request, openapi_response)
         assert not result.errors
diff --git a/tests/integration/contrib/flask/conftest.py b/tests/integration/contrib/flask/conftest.py
index 4e86bcdc..c737f009 100644
--- a/tests/integration/contrib/flask/conftest.py
+++ b/tests/integration/contrib/flask/conftest.py
@@ -44,6 +44,9 @@ def create_request(method, path, subdomain=None, query_string=None):
 @pytest.fixture
 def response_factory():
     def create_response(
-            data, status_code=200, content_type='application/json'):
-        return Response(data, status=status_code, content_type=content_type)
+            data, status_code=200, headers=None,
+            content_type='application/json'):
+        return Response(
+            data, status=status_code, headers=headers,
+            content_type=content_type)
     return create_response
diff --git a/tests/integration/contrib/flask/data/v3.0/flask_factory.yaml b/tests/integration/contrib/flask/data/v3.0/flask_factory.yaml
index 6ed6d563..3b674c7c 100644
--- a/tests/integration/contrib/flask/data/v3.0/flask_factory.yaml
+++ b/tests/integration/contrib/flask/data/v3.0/flask_factory.yaml
@@ -26,6 +26,12 @@ paths:
                 properties:
                   data:
                     type: string
+          headers:
+            X-Rate-Limit:
+              description: Rate limit
+              schema:
+                type: integer
+              required: true
         default:
           description: Return errors.
           content:
diff --git a/tests/integration/contrib/flask/test_flask_decorator.py b/tests/integration/contrib/flask/test_flask_decorator.py
index 31c30c6f..6e6c899c 100644
--- a/tests/integration/contrib/flask/test_flask_decorator.py
+++ b/tests/integration/contrib/flask/test_flask_decorator.py
@@ -62,7 +62,9 @@ def view_response_callable(*args, **kwargs):
             assert request.openapi.parameters == RequestParameters(path={
                 'id': 12,
             })
-            return make_response('success', 200)
+            resp = make_response('success', 200)
+            resp.headers['X-Rate-Limit'] = '12'
+            return resp
         self.view_response_callable = view_response_callable
         result = client.get('/browse/12/')
 
@@ -172,7 +174,9 @@ def view_response_callable(*args, **kwargs):
             assert request.openapi.parameters == RequestParameters(path={
                 'id': 12,
             })
-            return jsonify(data='data')
+            resp = jsonify(data='data')
+            resp.headers['X-Rate-Limit'] = '12'
+            return resp
         self.view_response_callable = view_response_callable
 
         result = client.get('/browse/12/')
diff --git a/tests/integration/contrib/flask/test_flask_validation.py b/tests/integration/contrib/flask/test_flask_validation.py
index 672df583..95170f37 100644
--- a/tests/integration/contrib/flask/test_flask_validation.py
+++ b/tests/integration/contrib/flask/test_flask_validation.py
@@ -22,7 +22,10 @@ def test_response_validator_path_pattern(self,
         validator = ResponseValidator(flask_spec)
         request = request_factory('GET', '/browse/12/', subdomain='kb')
         openapi_request = FlaskOpenAPIRequest(request)
-        response = response_factory('{"data": "data"}', status_code=200)
+        response = response_factory(
+            '{"data": "data"}',
+            status_code=200, headers={'X-Rate-Limit': '12'},
+        )
         openapi_response = FlaskOpenAPIResponse(response)
         result = validator.validate(openapi_request, openapi_response)
         assert not result.errors
diff --git a/tests/integration/contrib/flask/test_flask_views.py b/tests/integration/contrib/flask/test_flask_views.py
index 4134a0f7..2933e505 100644
--- a/tests/integration/contrib/flask/test_flask_views.py
+++ b/tests/integration/contrib/flask/test_flask_views.py
@@ -55,6 +55,7 @@ def view(self, app, details_view_func, list_view_func):
 
     def test_invalid_content_type(self, client):
         self.view_response = make_response('success', 200)
+        self.view_response.headers['X-Rate-Limit'] = '12'
 
         result = client.get('/browse/12/')
 
@@ -158,8 +159,31 @@ def test_endpoint_error(self, client):
         assert result.status_code == 400
         assert result.json == expected_data
 
+    def test_missing_required_header(self, client):
+        self.view_response = jsonify(data='data')
+
+        result = client.get('/browse/12/')
+
+        expected_data = {
+            'errors': [
+                {
+                    'class': (
+                        "<class 'openapi_core.exceptions."
+                        "MissingRequiredHeader'>"
+                    ),
+                    'status': 400,
+                    'title': (
+                        "Missing required header: X-Rate-Limit"
+                    )
+                }
+            ]
+        }
+        assert result.status_code == 400
+        assert result.json == expected_data
+
     def test_valid(self, client):
         self.view_response = jsonify(data='data')
+        self.view_response.headers['X-Rate-Limit'] = '12'
 
         result = client.get('/browse/12/')
 
diff --git a/tests/integration/contrib/requests/data/v3.0/requests_factory.yaml b/tests/integration/contrib/requests/data/v3.0/requests_factory.yaml
index c3f73cd2..c7ea6c3a 100644
--- a/tests/integration/contrib/requests/data/v3.0/requests_factory.yaml
+++ b/tests/integration/contrib/requests/data/v3.0/requests_factory.yaml
@@ -44,6 +44,12 @@ paths:
                 properties:
                   data:
                     type: string
+          headers:
+            X-Rate-Limit:
+              description: Rate limit
+              schema:
+                type: integer
+              required: true
         default:
           description: Return errors.
           content:
diff --git a/tests/integration/contrib/requests/test_requests_validation.py b/tests/integration/contrib/requests/test_requests_validation.py
index 997a1a43..c15bf361 100644
--- a/tests/integration/contrib/requests/test_requests_validation.py
+++ b/tests/integration/contrib/requests/test_requests_validation.py
@@ -22,6 +22,7 @@ def test_response_validator_path_pattern(self, spec):
         responses.add(
             responses.POST, 'http://localhost/browse/12/?q=string',
             json={"data": "data"}, status=200, match_querystring=True,
+            headers={'X-Rate-Limit': '12'},
         )
         validator = ResponseValidator(spec)
         request = requests.Request(