diff --git a/tests/test_utils_registry.py b/tests/test_utils_registry.py
index 05edc7805..04a5702e9 100644
--- a/tests/test_utils_registry.py
+++ b/tests/test_utils_registry.py
@@ -110,17 +110,31 @@ def test_signature_preservation():
     assert "y: str = 'hello'" in str(TestClass.__signature__)
 
 def test_weakset_vs_set_behavior(clean_registry):
-    # Test WeakSet vs set reference behavior 
+    # Test WeakSet vs set reference behavior
     class Item(Registry):
         pass
     
+    # Create item and get references
     item = Item()
+    item_id = id(item)
     reg_set = instances(Item, weak=False)
     reg_weak = instances(Item, weak=True)
     
+    # Verify initial state
     assert len(reg_set) == 1
     assert len(reg_weak) == 1
     
+    # Delete the only reference
     del item
-    assert len(reg_weak) == 0   # WeakSet auto-clears
-    assert len(reg_set) == 1    # Regular set maintains reference
\ No newline at end of file
+    
+    # Force garbage collection
+    import gc
+    gc.collect()
+    
+    # Verify WeakSet cleared but regular set maintains reference
+    assert len(reg_weak) == 0  # WeakSet should be empty
+    assert len(reg_set) == 1    # Regular set keeps reference
+    
+    # Extra verification that the object was really collected
+    for ref in reg_weak:
+        assert id(ref) != item_id  # Shouldn't find our item
\ No newline at end of file