diff --git a/integration-tests/test_install.py b/integration-tests/test_install.py
index 14f2a56..58f2815 100644
--- a/integration-tests/test_install.py
+++ b/integration-tests/test_install.py
@@ -207,6 +207,7 @@ def test_pip_upgrade(group, allowed):
                 "-m",
                 "pip",
                 "install",
+                "--no-user",
                 "--ignore-installed",
                 "--no-deps",
                 "testpath==0.3.0",
@@ -219,6 +220,7 @@ def test_pip_upgrade(group, allowed):
             preexec_fn=partial(setgroup, group),
         )
 
+
 def test_symlinks():
     """
     Test we symlink tljh-config to /usr/local/bin