diff --git a/lib/tasks/sync_fgu_personal_data_tasks.rake b/lib/tasks/sync_fgu_personal_data_tasks.rake
index ffc2268..97ed328 100644
--- a/lib/tasks/sync_fgu_personal_data_tasks.rake
+++ b/lib/tasks/sync_fgu_personal_data_tasks.rake
@@ -17,7 +17,7 @@ module FguSyncPlugin
     ["zh_tw", "en"].map{|l| [l, d]}.to_h
   end
   def self.parse_date(d)
-    (d.present? ? (Date.parse(d) rescue nil) : nil)
+    (d.present? ? (d.class == String ? (Date.parse(d) rescue nil) : d) : nil)
   end
   def self.camelize(str)
     str.split('_').map{|v| v.capitalize}.join(' ')