diff --git a/app/MetadataResolver/PixivResolver.php b/app/MetadataResolver/PixivResolver.php
index 64f825c..ff893a0 100644
--- a/app/MetadataResolver/PixivResolver.php
+++ b/app/MetadataResolver/PixivResolver.php
@@ -64,7 +64,7 @@ class PixivResolver implements Resolver
 
             $metadata->title = $json['body']['illustTitle'] ?? '';
             $metadata->description = '投稿者: ' . $json['body']['userName'] . PHP_EOL . strip_tags(str_replace('<br />', PHP_EOL, $json['body']['illustComment'] ?? ''));
-            $metadata->image = $this->proxize($json['body']['urls']['original'] ?? '');
+            $metadata->image = $this->proxize($json['body']['urls']['regular'] ?? '');
 
             // ページ数の指定がある場合は画像URLをそのページにする
             if ($page != 0) {
diff --git a/tests/Unit/MetadataResolver/PixivResolverTest.php b/tests/Unit/MetadataResolver/PixivResolverTest.php
index 2ec8465..6b0326b 100644
--- a/tests/Unit/MetadataResolver/PixivResolverTest.php
+++ b/tests/Unit/MetadataResolver/PixivResolverTest.php
@@ -27,7 +27,7 @@ class PixivResolverTest extends TestCase
         $metadata = $this->resolver->resolve('https://www.pixiv.net/member_illust.php?mode=medium&illust_id=68188073');
         $this->assertEquals('coffee break', $metadata->title);
         $this->assertEquals('投稿者: 裕' . PHP_EOL, $metadata->description);
-        $this->assertEquals('https://i.pixiv.cat/img-original/img/2018/04/12/00/01/28/68188073_p0.jpg', $metadata->image);
+        $this->assertEquals('https://i.pixiv.cat/img-master/img/2018/04/12/00/01/28/68188073_p0_master1200.jpg', $metadata->image);
         $this->assertEquals(['オリジナル','カフェ','眼鏡','イヤホン','ぱっつん','艶ぼくろ','眼鏡っ娘','オリジナル5000users入り'], $metadata->tags);
         if ($this->shouldUseMock()) {
             $this->assertSame('https://www.pixiv.net/ajax/illust/68188073', (string) $this->handler->getLastRequest()->getUri());
@@ -43,7 +43,7 @@ class PixivResolverTest extends TestCase
         $metadata = $this->resolver->resolve('https://www.pixiv.net/member_illust.php?mode=medium&illust_id=74939802');
         $this->assertEquals('T-20S', $metadata->title);
         $this->assertEquals('投稿者: amssc' . PHP_EOL . 'JUST FOR FUN' . PHP_EOL . '现在可以做到游戏内立绘修改拉！立绘动态皮肤都可以支持，想要资助获得新技术请站内信联系我。', $metadata->description);
-        $this->assertEquals('https://i.pixiv.cat/img-original/img/2019/05/28/01/16/24/74939802_p0.jpg', $metadata->image);
+        $this->assertEquals('https://i.pixiv.cat/img-master/img/2019/05/28/01/16/24/74939802_p0_master1200.jpg', $metadata->image);
         $this->assertEquals(['巨乳','母乳','lastorigin','Last_Origin','T-20S','おっぱい','라스트오리진','노움'], $metadata->tags);
         if ($this->shouldUseMock()) {
             $this->assertSame('https://www.pixiv.net/ajax/illust/74939802', (string) $this->handler->getLastRequest()->getUri());
@@ -59,7 +59,7 @@ class PixivResolverTest extends TestCase
         $metadata = $this->resolver->resolve('https://www.pixiv.net/member_illust.php?mode=medium&illust_id=46713544');
         $this->assertEquals('冬の日ラブラブ', $metadata->title);
         $this->assertEquals('投稿者: Aza' . PHP_EOL . 'ラブラブエッチのらくがき' . PHP_EOL . PHP_EOL . '三万フォロワー感謝します～' . PHP_EOL . PHP_EOL . '最近忙しいので、自分の時間が少ない・・・', $metadata->description);
-        $this->assertEquals('https://i.pixiv.cat/img-original/img/2014/10/25/00/06/58/46713544_p0.jpg', $metadata->image);
+        $this->assertEquals('https://i.pixiv.cat/img-master/img/2014/10/25/00/06/58/46713544_p0_master1200.jpg', $metadata->image);
         $this->assertEquals(['落書き','おっぱい','オリジナル','パイズリ','中出し','だいしゅきホールド','愛のあるセックス','黒髪ロング','オリジナル10000users入り'], $metadata->tags);
         if ($this->shouldUseMock()) {
             $this->assertSame('https://www.pixiv.net/ajax/illust/46713544', (string) $this->handler->getLastRequest()->getUri());