diff --git a/pubsub/noxfile.py b/pubsub/noxfile.py
index a2eefbb6765f7..9817201f03142 100644
--- a/pubsub/noxfile.py
+++ b/pubsub/noxfile.py
@@ -120,9 +120,15 @@ def system(session):
 
     # Run py.test against the system tests.
     if system_test_exists:
-        session.run("py.test", "--quiet", system_test_path, *session.posargs)
-    if system_test_folder_exists:
-        session.run("py.test", "--quiet", system_test_folder_path, *session.posargs)
+        session.run(
+            "py.test",
+            "--quiet",
+            "-k test_streaming_pull_subscriber_permissions_sufficient",
+            system_test_path,
+            *session.posargs,
+        )
+    # if system_test_folder_exists:
+    #     session.run("py.test", "--quiet", system_test_folder_path, *session.posargs)
 
 
 @nox.session(python="3.7")