diff --git a/src/rf_mapper/database.py b/src/rf_mapper/database.py
index 262a3f7..4993801 100644
--- a/src/rf_mapper/database.py
+++ b/src/rf_mapper/database.py
@@ -267,7 +267,7 @@ class DeviceDatabase:
         cursor = conn.cursor()
         timestamp = datetime.now().isoformat()
 
-        # Insert or update device
+        # Insert or update device (don't touch updated_at - that's for metadata changes only)
         cursor.execute("""
             INSERT INTO devices (device_id, device_type, name, ssid, manufacturer, encryption, channel, frequency, first_seen, last_seen, total_observations)
             VALUES (?, 'wifi', ?, ?, ?, ?, ?, ?, ?, ?, 1)
@@ -279,8 +279,7 @@ class DeviceDatabase:
                 channel = COALESCE(excluded.channel, devices.channel),
                 frequency = COALESCE(excluded.frequency, devices.frequency),
                 last_seen = excluded.last_seen,
-                total_observations = devices.total_observations + 1,
-                updated_at = CURRENT_TIMESTAMP
+                total_observations = devices.total_observations + 1
         """, (bssid, ssid, ssid, manufacturer, encryption, channel, frequency, timestamp, timestamp))
 
         # Insert RSSI observation
@@ -326,7 +325,7 @@ class DeviceDatabase:
         """, (address,))
         prev = cursor.fetchone()
 
-        # Insert or update device
+        # Insert or update device (don't touch updated_at - that's for metadata changes only)
         cursor.execute("""
             INSERT INTO devices (device_id, device_type, name, manufacturer, device_class, bt_device_type, first_seen, last_seen, total_observations)
             VALUES (?, 'bluetooth', ?, ?, ?, ?, ?, ?, 1)
@@ -336,8 +335,7 @@ class DeviceDatabase:
                 device_class = COALESCE(excluded.device_class, devices.device_class),
                 bt_device_type = COALESCE(excluded.bt_device_type, devices.bt_device_type),
                 last_seen = excluded.last_seen,
-                total_observations = devices.total_observations + 1,
-                updated_at = CURRENT_TIMESTAMP
+                total_observations = devices.total_observations + 1
         """, (address, name, manufacturer, device_class, device_type, timestamp, timestamp))
 
         # Insert RSSI observation