diff --git a/bookshelf/feed b/bookshelf/feed
index bdaa674245b..976ff7a7c65 100644
--- a/bookshelf/feed
+++ b/bookshelf/feed
@@ -12,6 +12,14 @@
     <atom:link href="https://hail2u.net/bookshelf/feed" rel="self" type="application/rss+xml"/>
     <creativeCommons:license>https://creativecommons.org/licenses/by/4.0/</creativeCommons:license>
 
+      <item>
+        <description><![CDATA[山科千里]]></description>
+        <guid>https://www.amazon.co.jp/exec/obidos/ASIN/4814004621/hail2unet-22</guid>
+        <link>https://www.amazon.co.jp/exec/obidos/ASIN/4814004621/hail2unet-22</link>
+        <pubDate>Fri, 22 Dec 2023 16:08:04 +0900</pubDate>
+        <title><![CDATA[土の塔に木が生えて]]></title>
+        <content:encoded><![CDATA[<a href="https://www.amazon.co.jp/exec/obidos/ASIN/4814004621/hail2unet-22"><img alt="土の塔に木が生えて / 山科千里" height="500" src="https://m.media-amazon.com/images/P/4814004621.jpg" width="342"></a>]]></content:encoded>
+      </item>
       <item>
         <description><![CDATA[三好由紀彦]]></description>
         <guid>https://www.amazon.co.jp/exec/obidos/ASIN/B0B59K4MHG/hail2unet-22</guid>
@@ -84,13 +92,5 @@
         <title><![CDATA[平安貴族サバイバル]]></title>
         <content:encoded><![CDATA[<a href="https://www.amazon.co.jp/exec/obidos/ASIN/B0B1MRGQ74/hail2unet-22"><img alt="平安貴族サバイバル / 木村朗子" height="500" src="https://m.media-amazon.com/images/P/B0B1MRGQ74.jpg" width="339"></a>]]></content:encoded>
       </item>
-      <item>
-        <description><![CDATA[アレックス・シアラー]]></description>
-        <guid>https://www.amazon.co.jp/exec/obidos/ASIN/4763005014/hail2unet-22</guid>
-        <link>https://www.amazon.co.jp/exec/obidos/ASIN/4763005014/hail2unet-22</link>
-        <pubDate>Thu, 7 Sep 2023 07:21:07 +0900</pubDate>
-        <title><![CDATA[スノードーム]]></title>
-        <content:encoded><![CDATA[<a href="https://www.amazon.co.jp/exec/obidos/ASIN/4763005014/hail2unet-22"><img alt="スノードーム / アレックス・シアラー" height="500" src="https://m.media-amazon.com/images/P/4763005014.jpg" width="351"></a>]]></content:encoded>
-      </item>
   </channel>
 </rss>
diff --git a/bookshelf/index.html b/bookshelf/index.html
index dd27b9245b4..d8cb065cb7e 100644
--- a/bookshelf/index.html
+++ b/bookshelf/index.html
@@ -52,6 +52,11 @@ <h2>年別</h2>
         <section id="2023">
           <h2><time datetime="2023-12">2023年12月</time></h2>
 
+      <p class="date"><time datetime="2023-12-22T16:08:04+09:00">12月22日</time></p>
+
+      <p><a href="https://www.amazon.co.jp/exec/obidos/ASIN/4814004621/hail2unet-22">土の塔に木が生えて</a> <span aria-hidden="true">∥ </span>山科千里</p>
+
+
       <p class="date"><time datetime="2023-12-18T11:13:16+09:00">12月18日</time></p>
 
       <p><a href="https://www.amazon.co.jp/exec/obidos/ASIN/B0B59K4MHG/hail2unet-22">詩と哲学のあいだ</a> <span aria-hidden="true">∥ </span>三好由紀彦</p>
diff --git a/feed b/feed
index 031f22f9445..d6bc8a34520 100644
--- a/feed
+++ b/feed
@@ -12,6 +12,14 @@
     <atom:link href="https://hail2u.net/feed" rel="self" type="application/rss+xml"/>
     <creativeCommons:license>https://creativecommons.org/licenses/by/4.0/</creativeCommons:license>
 
+      <item>
+        <description><![CDATA[山科千里]]></description>
+        <guid>https://www.amazon.co.jp/exec/obidos/ASIN/4814004621/hail2unet-22</guid>
+        <link>https://www.amazon.co.jp/exec/obidos/ASIN/4814004621/hail2unet-22</link>
+        <pubDate>Fri, 22 Dec 2023 16:08:04 +0900</pubDate>
+        <title><![CDATA[土の塔に木が生えて]]></title>
+        <content:encoded><![CDATA[<a href="https://www.amazon.co.jp/exec/obidos/ASIN/4814004621/hail2unet-22"><img alt="土の塔に木が生えて / 山科千里" height="500" src="https://m.media-amazon.com/images/P/4814004621.jpg" width="342"></a>]]></content:encoded>
+      </item>
       <item>
         <description><![CDATA[GitHubのパスキー管理について。WindowsのFirefoxでは保存できないが、読出しはできるのでEdgeで保存すればFirefoxでもパスワードレスでログインできた。]]></description>
         <guid>https://docs.github.com/en/authentication/authenticating-with-a-passkey/managing-your-passkeys</guid>
@@ -142,13 +150,5 @@
         <title><![CDATA[Google-hosted malvertising leads to fake Keepass site that looks genuine]]></title>
         
       </item>
-      <item>
-        <description><![CDATA[パトリック・デウィット]]></description>
-        <guid>https://www.amazon.co.jp/exec/obidos/ASIN/B00EH9ZU1E/hail2unet-22</guid>
-        <link>https://www.amazon.co.jp/exec/obidos/ASIN/B00EH9ZU1E/hail2unet-22</link>
-        <pubDate>Wed, 18 Oct 2023 09:35:57 +0900</pubDate>
-        <title><![CDATA[シスターズ・ブラザーズ]]></title>
-        <content:encoded><![CDATA[<a href="https://www.amazon.co.jp/exec/obidos/ASIN/B00EH9ZU1E/hail2unet-22"><img alt="シスターズ・ブラザーズ / パトリック・デウィット" height="500" src="https://m.media-amazon.com/images/P/B00EH9ZU1E.jpg" width="341"></a>]]></content:encoded>
-      </item>
   </channel>
 </rss>