diff --git a/tests/data/packages/pip-test-package-0.1.1.tar.gz b/tests/data/packages/pip_test_package-0.1.1.tar.gz
similarity index 100%
rename from tests/data/packages/pip-test-package-0.1.1.tar.gz
rename to tests/data/packages/pip_test_package-0.1.1.tar.gz
diff --git a/tests/data/packages/pip-test-package-0.1.tar.gz b/tests/data/packages/pip_test_package-0.1.tar.gz
similarity index 100%
rename from tests/data/packages/pip-test-package-0.1.tar.gz
rename to tests/data/packages/pip_test_package-0.1.tar.gz
diff --git a/tests/functional/test_install.py b/tests/functional/test_install.py
index 140061a17..29db2ed77 100644
--- a/tests/functional/test_install.py
+++ b/tests/functional/test_install.py
@@ -391,7 +391,7 @@ def test_install_editable_uninstalls_existing(
     https://github.com/pypa/pip/issues/1548
     https://github.com/pypa/pip/pull/1552
     """
-    to_install = data.packages.joinpath("pip-test-package-0.1.tar.gz")
+    to_install = data.packages.joinpath("pip_test_package-0.1.tar.gz")
     result = script.pip_install_local(to_install)
     assert "Successfully installed pip-test-package" in result.stdout
     result.assert_installed("piptestpackage", editable=False)