diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py
index 4f7e7e7e..76f9a9d5 100644
--- a/tests/integration/conftest.py
+++ b/tests/integration/conftest.py
@@ -24,6 +24,8 @@ warnings.simplefilter("default", category=ResourceWarning)
 
 HAS_WARNED_GITHUB = False
 
+DEFAULT_PRIVATE_PYPI_SERVER = os.environ.get("PIPENV_PYPI_SERVER", "http://localhost:8080/simple")
+
 
 def try_internet(url="http://httpbin.org/ip", timeout=1.5):
     resp = requests.get(url, timeout=timeout)
@@ -321,7 +323,7 @@ def pipenv_instance_private_pypi(capfdbinary, monkeypatch):
         warnings.simplefilter("ignore", category=ResourceWarning)
         warnings.filterwarnings("ignore", category=ResourceWarning, message="unclosed.*<ssl.SSLSocket.*>")
         try:
-            yield functools.partial(_PipenvInstance, capfd=capfdbinary, index_url="http://localhost:8080/simple")
+            yield functools.partial(_PipenvInstance, capfd=capfdbinary, index_url=DEFAULT_PRIVATE_PYPI_SERVER)
         finally:
             os.umask(original_umask)
 
diff --git a/tests/integration/test_uninstall.py b/tests/integration/test_uninstall.py
index 873cbf3d..3956901a 100644
--- a/tests/integration/test_uninstall.py
+++ b/tests/integration/test_uninstall.py
@@ -1,5 +1,6 @@
 import pytest
 
+from .conftest import DEFAULT_PRIVATE_PYPI_SERVER
 
 from pipenv.utils.shell import temp_environ
 
@@ -54,7 +55,7 @@ def test_uninstall_django(pipenv_instance_private_pypi):
 def test_mirror_uninstall(pipenv_instance_pypi):
     with temp_environ(), pipenv_instance_pypi() as p:
 
-        mirror_url = p.index_url
+        mirror_url = DEFAULT_PRIVATE_PYPI_SERVER
         assert "pypi.org" not in mirror_url
 
         c = p.pipenv(f"install Django --pypi-mirror {mirror_url}")