diff --git a/rest_framework/routers.py b/rest_framework/routers.py
index db1492c45..de04cb674 100644
--- a/rest_framework/routers.py
+++ b/rest_framework/routers.py
@@ -77,7 +77,7 @@ def flatten(list_of_lists):
 
 class RenameRouterMethods(RenameMethodsBase):
     renamed_methods = (
-        ('get_default_base_name', 'get_default_basename', DeprecationWarning),
+        ('get_default_base_name', 'get_default_basename', PendingDeprecationWarning),
     )
 
 
@@ -87,8 +87,8 @@ class BaseRouter(six.with_metaclass(RenameRouterMethods)):
 
     def register(self, prefix, viewset, basename=None, base_name=None):
         if base_name is not None:
-            msg = "The `base_name` argument has been deprecated in favor of `basename`."
-            warnings.warn(msg, DeprecationWarning, 2)
+            msg = "The `base_name` argument is pending deprecation in favor of `basename`."
+            warnings.warn(msg, PendingDeprecationWarning, 2)
 
         assert not (basename and base_name), (
             "Do not provide both the `basename` and `base_name` arguments.")
diff --git a/tests/test_routers.py b/tests/test_routers.py
index 1dd2d2b0a..eae3f5458 100644
--- a/tests/test_routers.py
+++ b/tests/test_routers.py
@@ -495,18 +495,18 @@ class TestBaseNameRename(TestCase):
             warnings.simplefilter('always')
             router.register('mock', MockViewSet, 'mock', base_name='mock')
 
-        msg = "The `base_name` argument has been deprecated in favor of `basename`."
+        msg = "The `base_name` argument is pending deprecation in favor of `basename`."
         assert len(w) == 1
         assert str(w[0].message) == msg
 
     def test_base_name_argument_deprecation(self):
         router = SimpleRouter()
 
-        with warnings.catch_warnings(record=True) as w:
+        with pytest.warns(PendingDeprecationWarning) as w:
             warnings.simplefilter('always')
             router.register('mock', MockViewSet, base_name='mock')
 
-        msg = "The `base_name` argument has been deprecated in favor of `basename`."
+        msg = "The `base_name` argument is pending deprecation in favor of `basename`."
         assert len(w) == 1
         assert str(w[0].message) == msg
         assert router.registry == [
@@ -529,7 +529,7 @@ class TestBaseNameRename(TestCase):
         msg = "`CustomRouter.get_default_base_name` method should be renamed `get_default_basename`."
 
         # Class definition should raise a warning
-        with warnings.catch_warnings(record=True) as w:
+        with pytest.warns(PendingDeprecationWarning) as w:
             warnings.simplefilter('always')
 
             class CustomRouter(SimpleRouter):