diff --git a/noxfile.py b/noxfile.py
index a1e8e5b99b..fc3c086f35 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -108,7 +108,7 @@
 SYSTEM_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {
     "3.9": ["tests", "anywidget"],
     "3.10": ["tests"],
-    "3.12": ["tests", "scikit-learn", "polars", "anywidget"],
+    LATEST_FULLY_SUPPORTED_PYTHON: ["all"],
     "3.13": ["tests", "polars"],
 }
 
@@ -425,10 +425,6 @@ def doctest(session: nox.sessions.Session):
             "third_party",
             "--ignore",
             "third_party/bigframes_vendored/ibis",
-            "--ignore",
-            "bigframes/core/compile/polars",
-            "--ignore",
-            "bigframes/testing",
         ),
         test_folder="bigframes",
         check_cov=True,