diff --git a/noxfile.py b/noxfile.py
index dc265bfa..db51bbf2 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -111,7 +111,7 @@ def system(session):
     # Install all test dependencies, then install this package into the
     # virtualenv's dist-packages.
     session.install("mock", "pytest")
-    session.install("git+git@github.com:googleapis/python-test-utils")
+    session.install("git+https://github.com:googleapis/python-test-utils")
     session.install("-e", ".")
 
     # Run py.test against the system tests.