2 files changed, 3 insertions, 6 deletions
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index 51c0ce11e82..fd39d3f7c95 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -2333,6 +2333,7 @@ def check_disallow_instantiation(testcase, tp, *args, **kwds):
         qualname = f"{name}"
     msg = f"cannot create '{re.escape(qualname)}' instances"
     testcase.assertRaisesRegex(TypeError, msg, tp, *args, **kwds)
+    testcase.assertRaisesRegex(TypeError, msg, tp.__new__, tp, *args, **kwds)
 
 def get_recursion_depth():
     """Get the recursion depth of the caller function.
diff --git a/Lib/test/support/channels.py b/Lib/test/support/channels.py
index b2de24d9d3e..fab1797659b 100644
--- a/Lib/test/support/channels.py
+++ b/Lib/test/support/channels.py
@@ -105,12 +105,8 @@ class _ChannelEnd:
         return other._id == self._id
 
     # for pickling:
-    def __getnewargs__(self):
-        return (int(self._id),)
-
-    # for pickling:
-    def __getstate__(self):
-        return None
+    def __reduce__(self):
+        return (type(self), (int(self._id),))
 
     @property
     def id(self):