diff --git a/lib/dbwrap.js b/lib/dbwrap.js
index ce70d8a..cc67861 100644
--- a/lib/dbwrap.js
+++ b/lib/dbwrap.js
@@ -327,8 +327,8 @@ function wrap(db, dir, dbsMap) {
         return PromiseA.reject(new Error("no id supplied"));
       }
 
-      obj.created_at = Date.now();
-      obj.updated_at = Date.now();
+      obj.createdAt = Date.now();
+      obj.updatedAt = Date.now();
 
       return new PromiseA(function (resolve, reject) {
         var json = JSON.stringify(obj);
@@ -441,6 +441,8 @@ function wrap(db, dir, dbsMap) {
     }
 
     DB.set = function (id, obj) {
+      obj.updatedAt = Date.now();
+
       var json = JSON.stringify(obj);
       var data = JSON.parse(json);