diff --git a/letta/services/agent_manager.py b/letta/services/agent_manager.py
index 0c83848b..8b9b403d 100644
--- a/letta/services/agent_manager.py
+++ b/letta/services/agent_manager.py
@@ -779,6 +779,7 @@ class AgentManager:
                 "response_format": agent_update.response_format,
                 "last_run_completion": agent_update.last_run_completion,
                 "last_run_duration_ms": agent_update.last_run_duration_ms,
+                "timezone": agent_update.timezone,
             }
             for col, val in scalar_updates.items():
                 if val is not None:
diff --git a/tests/test_client.py b/tests/test_client.py
index d873dd7b..8f6c2a23 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -687,6 +687,11 @@ def test_timezone(client: Letta):
         or "PST" in response.messages[1].content
     )
 
+    # test updating the timezone
+    client.agents.modify(agent_id=agent.id, timezone="America/New_York")
+    agent = client.agents.retrieve(agent_id=agent.id)
+    assert agent.timezone == "America/New_York"
+
 
 def test_attach_sleeptime_block(client: Letta):