diff --git a/pytest.ini b/pytest.ini
index 6859fae..13ecc01 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,3 +1,6 @@
 [pytest]
 
+# registered_domain; tldextract is pinned to <6.0.0
+
 filterwarnings =
+    ignore:The 'registered_domain' property is deprecated and will be removed in the next major version.:DeprecationWarning
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 5467449..54c866b 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@
     "BeautifulSoup4>4.13.0,<4.14.0",
     "requests>=2.19.1",
     "requests-toolbelt>=0.8.0",
-    "tldextract<6.0.0",  # `.registered_domain` deprecation
+    "tldextract<6.0.0",  # `.registered_domain` deprecation; see pytest.ini for warning
     "typing_extensions",
 ]