diff --git a/memgpt/cli/cli_config.py b/memgpt/cli/cli_config.py
index 94245ab5..de13b96b 100644
--- a/memgpt/cli/cli_config.py
+++ b/memgpt/cli/cli_config.py
@@ -1212,7 +1212,7 @@ def delete(option: str, name: str):
             client.delete_source(source_id=source.id)
         elif option == "agent":
             agent = client.get_agent(agent_name=name)
-            assert agent is not None, f"Agent {name} does not exist"        
+            assert agent is not None, f"Agent {name} does not exist"
             client.delete_agent(agent_id=agent.id)
         elif option == "human":
             human = client.get_human(name=name)
diff --git a/memgpt/memory.py b/memgpt/memory.py
index cc832edd..521df8e9 100644
--- a/memgpt/memory.py
+++ b/memgpt/memory.py
@@ -98,13 +98,14 @@ class ChatMemory(BaseMemory):
             "human": MemoryModule(name="human", value=human, limit=limit),
         }
 
-    def core_memory_append(self, name: str, content: str) -> Optional[str]:
+    def core_memory_append(self, name: str, content: str, subsection: Optional[str] = "None") -> Optional[str]:
         """
         Append to the contents of core memory.
 
         Args:
             name (str): Section of the memory to be edited (persona or human).
             content (str): Content to write to the memory. All unicode (including emojis) are supported.
+            subsection (Optional[str]): Name of sub-section to store memory.  Must be "public", "private", or "relationship". Defaults to "private".
 
         Returns:
             Optional[str]: None is always returned as this function does not produce a response.