diff --git a/tests/integration/cassettes/test_httpx_test_test_behind_proxy.yml b/tests/integration/cassettes/test_httpx_test_test_behind_proxy.yml
index 355ebeb..16c6fcf 100644
--- a/tests/integration/cassettes/test_httpx_test_test_behind_proxy.yml
+++ b/tests/integration/cassettes/test_httpx_test_test_behind_proxy.yml
@@ -13,7 +13,7 @@ interactions:
       user-agent:
       - python-httpx/0.12.1
     method: GET
-    uri: https://httpbin.org/headers
+    uri: https://mockbin.org/headers
   response:
     content: "{\n  \"headers\": {\n    \"Accept\": \"*/*\", \n    \"Accept-Encoding\"\
       : \"gzip, deflate, br\", \n    \"Host\": \"httpbin.org\", \n    \"User-Agent\"\
diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py
index 36010a6..d8e65fb 100644
--- a/tests/integration/conftest.py
+++ b/tests/integration/conftest.py
@@ -5,3 +5,13 @@ import pytest
 def scheme(request):
     """Fixture that returns both http and https."""
     return request.param
+
+
+@pytest.fixture
+def mockbin(scheme):
+    return scheme + "://mockbin.org"
+
+
+@pytest.fixture
+def mockbin_request_url(mockbin):
+    return mockbin + "/request"
diff --git a/tests/integration/test_aiohttp.py b/tests/integration/test_aiohttp.py
index 4a10e06..6d14ee8 100644
--- a/tests/integration/test_aiohttp.py
+++ b/tests/integration/test_aiohttp.py
@@ -34,8 +34,9 @@ def post(url, output="text", **kwargs):
     return request("POST", url, output="text", **kwargs)
 
 
-def test_status(tmpdir, scheme):
-    url = scheme + "://httpbin.org"
+def test_status(tmpdir, mockbin_request_url):
+    url = mockbin_request_url
+
     with vcr.use_cassette(str(tmpdir.join("status.yaml"))):
         response, _ = get(url)
 
@@ -46,8 +47,8 @@ def test_status(tmpdir, scheme):
 
 
 @pytest.mark.parametrize("auth", [None, aiohttp.BasicAuth("vcrpy", "test")])
-def test_headers(tmpdir, scheme, auth):
-    url = scheme + "://httpbin.org"
+def test_headers(tmpdir, auth, mockbin_request_url):
+    url = mockbin_request_url
     with vcr.use_cassette(str(tmpdir.join("headers.yaml"))):
         response, _ = get(url, auth=auth)
 
@@ -62,8 +63,9 @@ def test_headers(tmpdir, scheme, auth):
         assert "yarl.URL" not in cassette.data[0]
 
 
-def test_case_insensitive_headers(tmpdir, scheme):
-    url = scheme + "://httpbin.org"
+def test_case_insensitive_headers(tmpdir, mockbin_request_url):
+    url = mockbin_request_url
+
     with vcr.use_cassette(str(tmpdir.join("whatever.yaml"))):
         _, _ = get(url)
 
@@ -74,8 +76,9 @@ def test_case_insensitive_headers(tmpdir, scheme):
         assert cassette.play_count == 1
 
 
-def test_text(tmpdir, scheme):
-    url = scheme + "://httpbin.org"
+def test_text(tmpdir, mockbin_request_url):
+    url = mockbin_request_url
+
     with vcr.use_cassette(str(tmpdir.join("text.yaml"))):
         _, response_text = get(url)
 
@@ -85,8 +88,8 @@ def test_text(tmpdir, scheme):
         assert cassette.play_count == 1
 
 
-def test_json(tmpdir, scheme):
-    url = scheme + "://httpbin.org/get"
+def test_json(tmpdir, mockbin_request_url):
+    url = mockbin_request_url
     headers = {"Content-Type": "application/json"}
 
     with vcr.use_cassette(str(tmpdir.join("json.yaml"))):
@@ -98,8 +101,8 @@ def test_json(tmpdir, scheme):
         assert cassette.play_count == 1
 
 
-def test_binary(tmpdir, scheme):
-    url = scheme + "://httpbin.org/image/png"
+def test_binary(tmpdir, mockbin_request_url):
+    url = mockbin_request_url + "/image/png"
     with vcr.use_cassette(str(tmpdir.join("binary.yaml"))):
         _, response_binary = get(url, output="raw")
 
@@ -109,23 +112,23 @@ def test_binary(tmpdir, scheme):
         assert cassette.play_count == 1
 
 
-def test_stream(tmpdir, scheme):
-    url = scheme + "://httpbin.org/get"
+def test_stream(tmpdir, mockbin_request_url):
+    url = mockbin_request_url
 
     with vcr.use_cassette(str(tmpdir.join("stream.yaml"))):
-        resp, body = get(url, output="raw")  # Do not use stream here, as the stream is exhausted by vcr
+        _, body = get(url, output="raw")  # Do not use stream here, as the stream is exhausted by vcr
 
     with vcr.use_cassette(str(tmpdir.join("stream.yaml"))) as cassette:
-        cassette_resp, cassette_body = get(url, output="stream")
+        _, cassette_body = get(url, output="stream")
         assert cassette_body == body
         assert cassette.play_count == 1
 
 
 @pytest.mark.parametrize("body", ["data", "json"])
-def test_post(tmpdir, scheme, body, caplog):
+def test_post(tmpdir, body, caplog, mockbin_request_url):
     caplog.set_level(logging.INFO)
     data = {"key1": "value1", "key2": "value2"}
-    url = scheme + "://httpbin.org/post"
+    url = mockbin_request_url
     with vcr.use_cassette(str(tmpdir.join("post.yaml"))):
         _, response_json = post(url, **{body: data})
 
@@ -146,14 +149,14 @@ def test_post(tmpdir, scheme, body, caplog):
     ), "Log message not found."
 
 
-def test_params(tmpdir, scheme):
-    url = scheme + "://httpbin.org/get?d=d"
+def test_params(tmpdir, mockbin_request_url):
+    url = mockbin_request_url + "?d=d"
     headers = {"Content-Type": "application/json"}
     params = {"a": 1, "b": 2, "c": "c"}
 
     with vcr.use_cassette(str(tmpdir.join("get.yaml"))) as cassette:
         _, response_json = get(url, output="json", params=params, headers=headers)
-        assert response_json["args"] == {"a": "1", "b": "2", "c": "c", "d": "d"}
+        assert response_json["queryString"] == {"a": "1", "b": "2", "c": "c", "d": "d"}
 
     with vcr.use_cassette(str(tmpdir.join("get.yaml"))) as cassette:
         _, cassette_response_json = get(url, output="json", params=params, headers=headers)
@@ -161,8 +164,8 @@ def test_params(tmpdir, scheme):
         assert cassette.play_count == 1
 
 
-def test_params_same_url_distinct_params(tmpdir, scheme):
-    url = scheme + "://httpbin.org/get"
+def test_params_same_url_distinct_params(tmpdir, mockbin_request_url):
+    url = mockbin_request_url
     headers = {"Content-Type": "application/json"}
     params = {"a": 1, "b": 2, "c": "c"}
 
@@ -180,8 +183,8 @@ def test_params_same_url_distinct_params(tmpdir, scheme):
             get(url, output="text", params=other_params)
 
 
-def test_params_on_url(tmpdir, scheme):
-    url = scheme + "://httpbin.org/get?a=1&b=foo"
+def test_params_on_url(tmpdir, mockbin_request_url):
+    url = mockbin_request_url + "?a=1&b=foo"
     headers = {"Content-Type": "application/json"}
 
     with vcr.use_cassette(str(tmpdir.join("get.yaml"))) as cassette:
@@ -245,8 +248,8 @@ def test_aiohttp_test_client_json(aiohttp_client, tmpdir):
     assert cassette.play_count == 1
 
 
-def test_redirect(aiohttp_client, tmpdir):
-    url = "https://mockbin.org/redirect/302/2"
+def test_redirect(tmpdir, mockbin):
+    url = mockbin + "/redirect/302/2"
 
     with vcr.use_cassette(str(tmpdir.join("redirect.yaml"))):
         response, _ = get(url)
@@ -269,9 +272,9 @@ def test_redirect(aiohttp_client, tmpdir):
     assert cassette_response.request_info.real_url == response.request_info.real_url
 
 
-def test_not_modified(aiohttp_client, tmpdir):
+def test_not_modified(tmpdir, mockbin):
     """It doesn't try to redirect on 304"""
-    url = "https://httpbin.org/status/304"
+    url = mockbin + "/status/304"
 
     with vcr.use_cassette(str(tmpdir.join("not_modified.yaml"))):
         response, _ = get(url)
@@ -286,13 +289,13 @@ def test_not_modified(aiohttp_client, tmpdir):
         assert cassette.play_count == 1
 
 
-def test_double_requests(tmpdir):
+def test_double_requests(tmpdir, mockbin_request_url):
     """We should capture, record, and replay all requests and response chains,
     even if there are duplicate ones.
 
     We should replay in the order we saw them.
     """
-    url = "https://httpbin.org/get"
+    url = mockbin_request_url
 
     with vcr.use_cassette(str(tmpdir.join("text.yaml"))):
         _, response_text1 = get(url, output="text")
@@ -397,8 +400,8 @@ def test_cookies_redirect(scheme, tmpdir):
     run_in_loop(run)
 
 
-def test_not_allow_redirects(tmpdir):
-    url = "https://mockbin.org/redirect/308/5"
+def test_not_allow_redirects(tmpdir, mockbin):
+    url = mockbin + "/redirect/308/5"
     path = str(tmpdir.join("redirects.yaml"))
 
     with vcr.use_cassette(path):
diff --git a/tests/integration/test_config.py b/tests/integration/test_config.py
index 013f849..e92c72a 100644
--- a/tests/integration/test_config.py
+++ b/tests/integration/test_config.py
@@ -7,12 +7,12 @@ import pytest
 import vcr
 
 
-def test_set_serializer_default_config(tmpdir, httpbin):
+def test_set_serializer_default_config(tmpdir, mockbin_request_url):
     my_vcr = vcr.VCR(serializer="json")
 
     with my_vcr.use_cassette(str(tmpdir.join("test.json"))):
         assert my_vcr.serializer == "json"
-        urlopen(httpbin.url + "/get")
+        urlopen(mockbin_request_url)
 
     with open(str(tmpdir.join("test.json"))) as f:
         file_content = f.read()
@@ -20,35 +20,35 @@ def test_set_serializer_default_config(tmpdir, httpbin):
         assert json.loads(file_content)
 
 
-def test_default_set_cassette_library_dir(tmpdir, httpbin):
+def test_default_set_cassette_library_dir(tmpdir, mockbin_request_url):
     my_vcr = vcr.VCR(cassette_library_dir=str(tmpdir.join("subdir")))
 
     with my_vcr.use_cassette("test.json"):
-        urlopen(httpbin.url + "/get")
+        urlopen(mockbin_request_url)
 
     assert os.path.exists(str(tmpdir.join("subdir").join("test.json")))
 
 
-def test_override_set_cassette_library_dir(tmpdir, httpbin):
+def test_override_set_cassette_library_dir(tmpdir, mockbin_request_url):
     my_vcr = vcr.VCR(cassette_library_dir=str(tmpdir.join("subdir")))
 
     cld = str(tmpdir.join("subdir2"))
 
     with my_vcr.use_cassette("test.json", cassette_library_dir=cld):
-        urlopen(httpbin.url + "/get")
+        urlopen(mockbin_request_url)
 
     assert os.path.exists(str(tmpdir.join("subdir2").join("test.json")))
     assert not os.path.exists(str(tmpdir.join("subdir").join("test.json")))
 
 
-def test_override_match_on(tmpdir, httpbin):
+def test_override_match_on(tmpdir, mockbin_request_url):
     my_vcr = vcr.VCR(match_on=["method"])
 
     with my_vcr.use_cassette(str(tmpdir.join("test.json"))):
-        urlopen(httpbin.url)
+        urlopen(mockbin_request_url)
 
     with my_vcr.use_cassette(str(tmpdir.join("test.json"))) as cass:
-        urlopen(httpbin.url + "/get")
+        urlopen(mockbin_request_url)
 
     assert len(cass) == 1
     assert cass.play_count == 1
@@ -62,12 +62,12 @@ def test_missing_matcher():
             pass
 
 
-def test_dont_record_on_exception(tmpdir):
+def test_dont_record_on_exception(tmpdir, mockbin_request_url):
     my_vcr = vcr.VCR(record_on_exception=False)
 
     @my_vcr.use_cassette(str(tmpdir.join("dontsave.yml")))
     def some_test():
-        assert b"Not in content" in urlopen("http://httpbin.org/get")
+        assert b"Not in content" in urlopen(mockbin_request_url)
 
     with pytest.raises(AssertionError):
         some_test()
@@ -77,6 +77,6 @@ def test_dont_record_on_exception(tmpdir):
     # Make sure context decorator has the same behavior
     with pytest.raises(AssertionError):
         with my_vcr.use_cassette(str(tmpdir.join("dontsave2.yml"))):
-            assert b"Not in content" in urlopen("http://httpbin.org/get").read()
+            assert b"Not in content" in urlopen(mockbin_request_url).read()
 
     assert not os.path.exists(str(tmpdir.join("dontsave2.yml")))
diff --git a/tests/integration/test_disksaver.py b/tests/integration/test_disksaver.py
index 9868555..f72b57d 100644
--- a/tests/integration/test_disksaver.py
+++ b/tests/integration/test_disksaver.py
@@ -10,19 +10,19 @@ from urllib.request import urlopen
 import vcr
 
 
-def test_disk_saver_nowrite(tmpdir, httpbin):
+def test_disk_saver_nowrite(tmpdir, mockbin_request_url):
     """
     Ensure that when you close a cassette without changing it it doesn't
     rewrite the file
     """
     fname = str(tmpdir.join("synopsis.yaml"))
     with vcr.use_cassette(fname) as cass:
-        urlopen(httpbin.url).read()
+        urlopen(mockbin_request_url).read()
         assert cass.play_count == 0
     last_mod = os.path.getmtime(fname)
 
     with vcr.use_cassette(fname) as cass:
-        urlopen(httpbin.url).read()
+        urlopen(mockbin_request_url).read()
         assert cass.play_count == 1
         assert cass.dirty is False
     last_mod2 = os.path.getmtime(fname)
@@ -30,14 +30,14 @@ def test_disk_saver_nowrite(tmpdir, httpbin):
     assert last_mod == last_mod2
 
 
-def test_disk_saver_write(tmpdir, httpbin):
+def test_disk_saver_write(tmpdir, mockbin_request_url):
     """
     Ensure that when you close a cassette after changing it it does
     rewrite the file
     """
     fname = str(tmpdir.join("synopsis.yaml"))
     with vcr.use_cassette(fname) as cass:
-        urlopen(httpbin.url).read()
+        urlopen(mockbin_request_url).read()
         assert cass.play_count == 0
     last_mod = os.path.getmtime(fname)
 
@@ -46,8 +46,8 @@ def test_disk_saver_write(tmpdir, httpbin):
     time.sleep(1)
 
     with vcr.use_cassette(fname, record_mode=vcr.mode.ANY) as cass:
-        urlopen(httpbin.url).read()
-        urlopen(httpbin.url + "/get").read()
+        urlopen(mockbin_request_url).read()
+        urlopen(mockbin_request_url + "/get").read()
         assert cass.play_count == 1
         assert cass.dirty
     last_mod2 = os.path.getmtime(fname)
diff --git a/tests/integration/test_httpx.py b/tests/integration/test_httpx.py
index 2ed5c59..f791eb0 100644
--- a/tests/integration/test_httpx.py
+++ b/tests/integration/test_httpx.py
@@ -80,8 +80,6 @@ class DoAsyncRequest(BaseDoRequest):
 def pytest_generate_tests(metafunc):
     if "do_request" in metafunc.fixturenames:
         metafunc.parametrize("do_request", [DoAsyncRequest, DoSyncRequest])
-    if "scheme" in metafunc.fixturenames:
-        metafunc.parametrize("scheme", ["http", "https"])
 
 
 @pytest.fixture
@@ -89,8 +87,9 @@ def yml(tmpdir, request):
     return str(tmpdir.join(request.function.__name__ + ".yaml"))
 
 
-def test_status(tmpdir, scheme, do_request):
-    url = scheme + "://mockbin.org/request"
+def test_status(tmpdir, mockbin, do_request):
+    url = mockbin
+
     with vcr.use_cassette(str(tmpdir.join("status.yaml"))):
         response = do_request()("GET", url)
 
@@ -100,8 +99,9 @@ def test_status(tmpdir, scheme, do_request):
         assert cassette.play_count == 1
 
 
-def test_case_insensitive_headers(tmpdir, scheme, do_request):
-    url = scheme + "://mockbin.org/request"
+def test_case_insensitive_headers(tmpdir, mockbin, do_request):
+    url = mockbin
+
     with vcr.use_cassette(str(tmpdir.join("whatever.yaml"))):
         do_request()("GET", url)
 
@@ -112,8 +112,9 @@ def test_case_insensitive_headers(tmpdir, scheme, do_request):
         assert cassette.play_count == 1
 
 
-def test_content(tmpdir, scheme, do_request):
-    url = scheme + "://httpbin.org"
+def test_content(tmpdir, mockbin, do_request):
+    url = mockbin
+
     with vcr.use_cassette(str(tmpdir.join("cointent.yaml"))):
         response = do_request()("GET", url)
 
@@ -123,9 +124,10 @@ def test_content(tmpdir, scheme, do_request):
         assert cassette.play_count == 1
 
 
-def test_json(tmpdir, scheme, do_request):
-    url = scheme + "://httpbin.org/get"
-    headers = {"Content-Type": "application/json"}
+def test_json(tmpdir, mockbin, do_request):
+    url = mockbin + "/request"
+
+    headers = {"content-type": "application/json"}
 
     with vcr.use_cassette(str(tmpdir.join("json.yaml"))):
         response = do_request(headers=headers)("GET", url)
@@ -136,8 +138,8 @@ def test_json(tmpdir, scheme, do_request):
         assert cassette.play_count == 1
 
 
-def test_params_same_url_distinct_params(tmpdir, scheme, do_request):
-    url = scheme + "://httpbin.org/get"
+def test_params_same_url_distinct_params(tmpdir, mockbin, do_request):
+    url = mockbin + "/request"
     headers = {"Content-Type": "application/json"}
     params = {"a": 1, "b": False, "c": "c"}
 
@@ -156,8 +158,8 @@ def test_params_same_url_distinct_params(tmpdir, scheme, do_request):
             do_request()("GET", url, params=params, headers=headers)
 
 
-def test_redirect(tmpdir, do_request, yml):
-    url = "https://mockbin.org/redirect/303/2"
+def test_redirect(mockbin, yml, do_request):
+    url = mockbin + "/redirect/303/2"
 
     redirect_kwargs = {HTTPX_REDIRECT_PARAM.name: True}
 
@@ -182,20 +184,23 @@ def test_redirect(tmpdir, do_request, yml):
     }
 
 
-def test_work_with_gzipped_data(tmpdir, do_request, yml):
+def test_work_with_gzipped_data(mockbin, do_request, yml):
+    url = mockbin + "/gzip?foo=bar"
+    headers = {"accept-encoding": "deflate, gzip"}
+
     with vcr.use_cassette(yml):
-        do_request()("GET", "https://httpbin.org/gzip")
+        do_request(headers=headers)("GET", url)
 
     with vcr.use_cassette(yml) as cassette:
-        cassette_response = do_request()("GET", "https://httpbin.org/gzip")
+        cassette_response = do_request(headers=headers)("GET", url)
 
-        assert "gzip" in cassette_response.json()["headers"]["Accept-Encoding"]
+        assert cassette_response.headers["content-encoding"] == "gzip"
         assert cassette_response.read()
         assert cassette.play_count == 1
 
 
 @pytest.mark.parametrize("url", ["https://github.com/kevin1024/vcrpy/issues/" + str(i) for i in range(3, 6)])
-def test_simple_fetching(tmpdir, do_request, yml, url):
+def test_simple_fetching(do_request, yml, url):
     with vcr.use_cassette(yml):
         do_request()("GET", url)
 
@@ -210,7 +215,7 @@ def test_behind_proxy(do_request):
     yml = (
         os.path.dirname(os.path.realpath(__file__)) + "/cassettes/" + "test_httpx_test_test_behind_proxy.yml"
     )
-    url = "https://httpbin.org/headers"
+    url = "https://mockbin.org/headers"
     proxy = "http://localhost:8080"
     proxies = {"http://": proxy, "https://": proxy}
 
@@ -226,46 +231,47 @@ def test_behind_proxy(do_request):
         assert cassette_response.request.url == response.request.url
 
 
-def test_cookies(tmpdir, scheme, do_request):
+def test_cookies(tmpdir, mockbin, do_request):
     def client_cookies(client):
         return [c for c in client.client.cookies]
 
     def response_cookies(response):
         return [c for c in response.cookies]
 
-    with do_request() as client:
+    url = mockbin + "/bin/26148652-fe25-4f21-aaf5-689b5b4bf65f"
+    headers = {"cookie": "k1=v1;k2=v2"}
+
+    with do_request(headers=headers) as client:
         assert client_cookies(client) == []
 
         redirect_kwargs = {HTTPX_REDIRECT_PARAM.name: True}
 
-        url = scheme + "://httpbin.org"
         testfile = str(tmpdir.join("cookies.yml"))
         with vcr.use_cassette(testfile):
-            r1 = client("GET", url + "/cookies/set?k1=v1&k2=v2", **redirect_kwargs)
-            assert response_cookies(r1.history[0]) == ["k1", "k2"]
-            assert response_cookies(r1) == []
+            r1 = client("GET", url, **redirect_kwargs)
 
-            r2 = client("GET", url + "/cookies", **redirect_kwargs)
-            assert len(r2.json()["cookies"]) == 2
+            assert response_cookies(r1) == ["k1", "k2"]
 
+            r2 = client("GET", url, **redirect_kwargs)
+
+            assert response_cookies(r2) == ["k1", "k2"]
             assert client_cookies(client) == ["k1", "k2"]
 
-    with do_request() as new_client:
+    with do_request(headers=headers) as new_client:
         assert client_cookies(new_client) == []
 
         with vcr.use_cassette(testfile) as cassette:
-            cassette_response = new_client("GET", url + "/cookies/set?k1=v1&k2=v2")
-            assert response_cookies(cassette_response.history[0]) == ["k1", "k2"]
-            assert response_cookies(cassette_response) == []
+            cassette_response = new_client("GET", url)
 
-            assert cassette.play_count == 2
+            assert cassette.play_count == 1
+            assert response_cookies(cassette_response) == ["k1", "k2"]
             assert client_cookies(new_client) == ["k1", "k2"]
 
 
-def test_relative_redirects(tmpdir, scheme, do_request):
+def test_relative_redirects(tmpdir, scheme, do_request, mockbin):
     redirect_kwargs = {HTTPX_REDIRECT_PARAM.name: True}
 
-    url = scheme + "://mockbin.com/redirect/301?to=/redirect/301?to=/request"
+    url = mockbin + "/redirect/301?to=/redirect/301?to=/request"
     testfile = str(tmpdir.join("relative_redirects.yml"))
     with vcr.use_cassette(testfile):
         response = do_request()("GET", url, **redirect_kwargs)
@@ -280,8 +286,8 @@ def test_relative_redirects(tmpdir, scheme, do_request):
         assert cassette.play_count == 3
 
 
-def test_redirect_wo_allow_redirects(do_request, yml):
-    url = "https://mockbin.org/redirect/308/5"
+def test_redirect_wo_allow_redirects(do_request, mockbin, yml):
+    url = mockbin + "/redirect/308/5"
 
     redirect_kwargs = {HTTPX_REDIRECT_PARAM.name: False}
 
diff --git a/tests/integration/test_register_matcher.py b/tests/integration/test_register_matcher.py
index 9929833..d531f76 100644
--- a/tests/integration/test_register_matcher.py
+++ b/tests/integration/test_register_matcher.py
@@ -11,27 +11,27 @@ def false_matcher(r1, r2):
     return False
 
 
-def test_registered_true_matcher(tmpdir, httpbin):
+def test_registered_true_matcher(tmpdir, mockbin_request_url):
     my_vcr = vcr.VCR()
     my_vcr.register_matcher("true", true_matcher)
     testfile = str(tmpdir.join("test.yml"))
     with my_vcr.use_cassette(testfile, match_on=["true"]):
         # These 2 different urls are stored as the same request
-        urlopen(httpbin.url)
-        urlopen(httpbin.url + "/get")
+        urlopen(mockbin_request_url)
+        urlopen(mockbin_request_url + "/get")
 
     with my_vcr.use_cassette(testfile, match_on=["true"]):
         # I can get the response twice even though I only asked for it once
-        urlopen(httpbin.url + "/get")
-        urlopen(httpbin.url + "/get")
+        urlopen(mockbin_request_url)
+        urlopen(mockbin_request_url)
 
 
-def test_registered_false_matcher(tmpdir, httpbin):
+def test_registered_false_matcher(tmpdir, mockbin_request_url):
     my_vcr = vcr.VCR()
     my_vcr.register_matcher("false", false_matcher)
     testfile = str(tmpdir.join("test.yml"))
     with my_vcr.use_cassette(testfile, match_on=["false"]) as cass:
         # These 2 different urls are stored as different requests
-        urlopen(httpbin.url)
-        urlopen(httpbin.url + "/get")
+        urlopen(mockbin_request_url)
+        urlopen(mockbin_request_url + "/get")
         assert len(cass) == 2