diff --git a/lib/logs.js b/lib/logs.js
index 18daa049..5868e2dd 100644
--- a/lib/logs.js
+++ b/lib/logs.js
@@ -52,7 +52,7 @@ function update (deviceId, logLines) {
     }
     return _.mapKeys(_.snakeCase, formatted)
   }, logLines)
-  const sql = pgp.helpers.insert(logs, cs)
+  const sql = pgp.helpers.insert(logs, cs) + 'on conflict do nothing'
   return db.none(sql)
 }