diff -up greenlet-3.2.4/src/greenlet/tests/leakcheck.py.noobjgraph greenlet-3.2.4/src/greenlet/tests/leakcheck.py
--- greenlet-3.2.4/src/greenlet/tests/leakcheck.py.noobjgraph	2025-11-29 13:57:36.924990116 -0700
+++ greenlet-3.2.4/src/greenlet/tests/leakcheck.py	2025-11-29 14:01:38.252622044 -0700
@@ -131,10 +131,6 @@ class _RefCountChecker(object):
 
         return True
 
-    def _growth(self):
-        return objgraph.growth(limit=None, peak_stats=self.peak_stats,
-                               filter=self._include_object_p)
-
     def _report_diff(self, growth):
         if not growth:
             return "<Unable to calculate growth>"
@@ -165,16 +161,6 @@ class _RefCountChecker(object):
             if gc_enabled:
                 gc.enable()
 
-    def _growth_after(self):
-        # Grab post snapshot
-        # pylint:disable=no-member
-        if 'urlparse' in sys.modules:
-            sys.modules['urlparse'].clear_cache()
-        if 'urllib.parse' in sys.modules:
-            sys.modules['urllib.parse'].clear_cache()
-
-        return self._growth()
-
     def _check_deltas(self, growth):
         # Return false when we have decided there is no leak,
         # true if we should keep looping, raises an assertion
@@ -206,20 +192,12 @@ class _RefCountChecker(object):
         if len(deltas) >= 4 and sum(deltas[-4:]) == 0:
             return False
 
-        if len(deltas) >= 3 and deltas[-1] > 0 and deltas[-1] == deltas[-2] and deltas[-2] == deltas[-3]:
-            diff = self._report_diff(growth)
-            raise LeakCheckError('refcount increased by %r\n%s' % (deltas, diff))
-
         # OK, we don't know for sure yet. Let's search for more
         if sum(deltas[-3:]) <= 0 or sum(deltas[-4:]) <= 0 or deltas[-4:].count(0) >= 2:
             # this is suspicious, so give a few more runs
             limit = 11
         else:
             limit = 7
-        if len(deltas) >= limit:
-            raise LeakCheckError('refcount increased by %r\n%s'
-                                 % (deltas,
-                                    self._report_diff(growth)))
 
         # We couldn't decide yet, keep going
         return True
@@ -233,24 +211,6 @@ class _RefCountChecker(object):
             self.testcase.expect_greenlet_leak = True
         self.ignored_types = getattr(self.function, "leakcheck_ignore_types", ())
 
-        # Capture state before; the incremental will be
-        # updated by each call to _growth_after
-        growth = self._growth()
-
-        try:
-            while self._check_deltas(growth):
-                self._run_test(args, kwargs)
-
-                growth = self._growth_after()
-
-                self.deltas.append(sum((stat[2] for stat in growth)))
-        except LeakCheckError:
-            if not expect_failure:
-                raise
-        else:
-            if expect_failure:
-                raise LeakCheckError("Expected %s to leak but it did not." % (self.function,))
-
 def wrap_refcount(method):
     if getattr(method, 'ignore_leakcheck', False) or SKIP_LEAKCHECKS:
         return method
diff -up greenlet-3.2.4/src/greenlet/tests/leakcheck.py.noobjgraph greenlet-3.2.4/src/greenlet/tests/leakcheck.py
--- greenlet-3.2.4/src/greenlet/tests/leakcheck.py.noobjgraph	2025-11-29 14:02:02.908119435 -0700
+++ greenlet-3.2.4/src/greenlet/tests/leakcheck.py	2025-11-29 14:03:16.651174702 -0700
@@ -31,8 +31,6 @@ from functools import wraps
 import unittest
 
 
-import objgraph
-
 # graphviz 0.18 (Nov 7 2021), available only on Python 3.6 and newer,
 # has added type hints (sigh). It wants to use ``typing.Literal`` for
 # some stuff, but that's only available on Python 3.9+. If that's not
@@ -109,7 +107,6 @@ if hasattr(sys, 'getobjects'):
             return sys.getobjects(0) # pylint:disable=no-member
         def __getattr__(self, name):
             return getattr(gc, name)
-    objgraph.gc = _MockGC()
     fails_strict_leakcheck = fails_leakcheck
 else:
     def fails_strict_leakcheck(func):