diff --git a/fix_1528.py b/fix_1528.py
new file mode 100644
index 000000000..defc2ba06
--- /dev/null
+++ b/fix_1528.py
@@ -0,0 +1,36 @@
+import logging
+from memanto.app.constants import ALLOWED_UPDATE_FIELDS
+
+logging.basicConfig(level=logging.INFO)
+
+def update_memory(memory_id, namespace, updates):
+    """
+    Updates an existing memory record, restricting changes to ALLOWED_UPDATE_FIELDS.
+    """
+    # 1. Align with get_memory contract and handle missing records
+    memory = get_memory(memory_id, namespace)
+    if memory is None:
+        raise ValueError(f"Memory record {memory_id} not found in namespace {namespace}")
+
+    # 2. Log fields removed by the whitelist (names only, not values)
+    dropped_fields = [k for k in updates if k not in ALLOWED_UPDATE_FIELDS]
+    if dropped_fields:
+        logging.warning(f"Update dropped protected fields: {', '.join(dropped_fields)}")
+
+    # 3. Filter updates
+    allowed_updates = {k: v for k, v in updates.items() if k in ALLOWED_UPDATE_FIELDS}
+
+    # 4. Reconstruct the complete MemoryRecord, not a partial record
+    # Normalize the existing record to a dictionary to preserve all fields (agent_id, created_at, etc.)
+    if hasattr(memory, 'model_dump'):  # Pydantic v2
+        existing_data = memory.model_dump()
+    elif hasattr(memory, 'dict'):      # Pydantic v1
+        existing_data = memory.dict()
+    else:                               # Standard object
+        existing_data = vars(memory).copy()
+
+    # Overlay only allowed updates
+    existing_data.update(allowed_updates)
+
+    # Return the reconstructed record
+    return MemoryRecord(**existing_data)