diff --git a/synthtool/gcp/templates/python_library/noxfile.py.j2 b/synthtool/gcp/templates/python_library/noxfile.py.j2
index f9e93e87c..6189ff133 100644
--- a/synthtool/gcp/templates/python_library/noxfile.py.j2
+++ b/synthtool/gcp/templates/python_library/noxfile.py.j2
@@ -415,7 +415,6 @@ def prerelease_deps(session):
     system_deps_all = (
         SYSTEM_TEST_STANDARD_DEPENDENCIES
         + SYSTEM_TEST_EXTERNAL_DEPENDENCIES
-        + SYSTEM_TEST_EXTRAS
     )
     session.install(*system_deps_all)