diff --git a/src/pages/videos.js b/src/pages/videos.js
index 1933677..8bf73cf 100644
--- a/src/pages/videos.js
+++ b/src/pages/videos.js
@@ -86,6 +86,27 @@ class VideosPage extends Component {
               </tr>
             </thead>
             <tbody>
+              <tr>
+                <td>2022年12月17日</td>
+                <td><a
+                    target="_blank"
+                    rel="noopener noreferrer"
+                    href="https://youtu.be/1SOgvM_zrRw"
+                  >
+                    【超頑丈】お菓子の家に耐震工事を施してみた
+                  </a>
+                </td>
+                <td>
+                  <a
+                    className="button is-primary"
+                    target="_blank"
+                    rel="noopener noreferrer"
+                    href="/certificate/certificate_of_delay_2022-12-17.pdf"
+                  >
+                    1260分
+                  </a>
+                </td>
+              </tr>
               <tr>
                 <td>2022年11月8日</td>
                 <td><a
diff --git a/static/certificate/certificate_of_delay_2022-12-17.pdf b/static/certificate/certificate_of_delay_2022-12-17.pdf
new file mode 100644
index 0000000..ff07cc4
Binary files /dev/null and b/static/certificate/certificate_of_delay_2022-12-17.pdf differ