diff --git a/WePayV3/Order.php b/WePayV3/Order.php
index e22cb59..460c995 100644
--- a/WePayV3/Order.php
+++ b/WePayV3/Order.php
@@ -60,10 +60,10 @@ class Order extends BasicWePay
             $prepayId = $result['prepay_id'];
             $nonceStr = Tools::createNoncestr();
             if ($type === 'app') {
-                $sign = $this->signBuild(join("\n", [$appid, $time, $nonceStr, $prepayId]));
+                $sign = $this->signBuild(join("\n", [$appid, $time, $nonceStr, $prepayId])."\n");
                 return ['partnerId' => $this->config['mch_id'], 'prepayId' => $prepayId, 'package' => 'Sign=WXPay', 'nonceStr' => $nonceStr, 'timeStamp' => $time, 'sign' => $sign];
             } elseif ($type === 'jsapi') {
-                $sign = $this->signBuild(join("\n", [$appid, $time, $nonceStr, "prepay_id={$prepayId}"]));
+                $sign = $this->signBuild(join("\n", [$appid, $time, $nonceStr, "prepay_id={$prepayId}"])."\n");
                 return ['appId' => $appid, 'timeStamp' => $time, 'nonceStr' => $nonceStr, 'package' => "prepay_id={$prepayId}", 'signType' => 'RSA', 'paySign' => $sign];
             } else {
                 return $result;
@@ -103,4 +103,4 @@ class Order extends BasicWePay
         return $data;
     }
 
-}
\ No newline at end of file
+}