From 91ae31946fa96fc0ce13850625ed7a9672a04f96 Mon Sep 17 00:00:00 2001
From: Thomas Li <47963215+lithomas1@users.noreply.github.com>
Date: Wed, 14 Jul 2021 16:12:08 -0700
Subject: [PATCH] Backport PR #42539: Revert "CI: runtime warning in npdev
 build"

---
 pandas/tests/scalar/timedelta/test_arithmetic.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pandas/tests/scalar/timedelta/test_arithmetic.py b/pandas/tests/scalar/timedelta/test_arithmetic.py
index 8f03bd71f3a90..9f6cdbb81bd89 100644
--- a/pandas/tests/scalar/timedelta/test_arithmetic.py
+++ b/pandas/tests/scalar/timedelta/test_arithmetic.py
@@ -18,6 +18,7 @@
     NaT,
     Timedelta,
     Timestamp,
+    compat,
     offsets,
 )
 import pandas._testing as tm
@@ -437,7 +438,7 @@ def test_td_div_numeric_scalar(self):
                 np.float64("NaN"),
                 marks=pytest.mark.xfail(
                     # Works on numpy dev only in python 3.9
-                    is_numpy_dev,
+                    is_numpy_dev and not compat.PY39,
                     raises=RuntimeWarning,
                     reason="https://github.com/pandas-dev/pandas/issues/31992",
                 ),