diff --git a/lib/key_monitor/key_monitor_schema_lib.py b/lib/key_monitor/key_monitor_schema_lib.py
index ab3c575..9e64637 100644
--- a/lib/key_monitor/key_monitor_schema_lib.py
+++ b/lib/key_monitor/key_monitor_schema_lib.py
@@ -7,6 +7,7 @@ from typing import Any
 def ensure_key_monitor_schema(conn: Any) -> None:
     for sql in (
         "ALTER TABLE key_monitors ADD COLUMN last_mark_price REAL",
+        "ALTER TABLE key_monitors ADD COLUMN last_alert_message TEXT",
     ):
         try:
             conn.execute(sql)