From 126a076be7a48da7b47b06bbc2aaf5750b283d64 Mon Sep 17 00:00:00 2001
From: Kevin Sheppard <bashtage@users.noreply.github.com>
Date: Tue, 2 Dec 2025 13:24:58 +0000
Subject: [PATCH] MAINT: Obscure cow changes

---
 linearmodels/conftest.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/linearmodels/conftest.py b/linearmodels/conftest.py
index 215ae10cd8..a2382a4f5c 100644
--- a/linearmodels/conftest.py
+++ b/linearmodels/conftest.py
@@ -9,7 +9,11 @@
 cow = bool(os.environ.get("LM_TEST_COPY_ON_WRITE", ""))
 if cow:
     try:
-        pd.options.mode.copy_on_write = cow
+        import warnings
+
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore")
+            pd.options.mode.copy_on_write = cow
     except AttributeError:
         cow = False
 if cow: