diff --git a/lib/sqlHandler.js b/lib/sqlHandler.js
index 42a69a1..bc93ea8 100644
--- a/lib/sqlHandler.js
+++ b/lib/sqlHandler.js
@@ -173,7 +173,7 @@ SqlStore.prototype._defineRelationModel = function (relationName, many) {
       autoIncrement: true
     },
     id: {
-      type: new DataTypes.STRING(38),
+      type: DataTypes.UUID,
       allowNull: false
     },
     type: {