diff --git a/home/index.html b/home/index.html
index 5c6eca3..de899d5 100644
--- a/home/index.html
+++ b/home/index.html
@@ -35,6 +35,7 @@
                       <li><img src="../img/JD-slide2.jpeg" alt=""></li>
                       <li><img src="../img/JD-slide3.jpg" alt=""></li>
                       <li><img src="../img/JD-slide1.jpeg" alt=""></li>
+                      <li><img src="../img/JD-slide4.JPG" alt=""></li>
                     </ul>
                 </div>
             </div>
diff --git a/img/JD-slide4.JPG b/img/JD-slide4.JPG
new file mode 100644
index 0000000..99dfa46
--- /dev/null
+++ b/img/JD-slide4.JPG
Binary files differ
diff --git a/img/JD-slide4.jpg b/img/JD-slide4.jpg
new file mode 100644
index 0000000..bcd560b
--- /dev/null
+++ b/img/JD-slide4.jpg
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diff --git a/info/index.html b/info/index.html
index 7f47903..7697a28 100644
--- a/info/index.html
+++ b/info/index.html
@@ -142,7 +142,7 @@
             <tr>
                 <td class="num">17</td>
                 <td class="date">12月25日(土)</td>
-                <td class="room">103教室</td>
+                <td class="room"><strike>103教室</strike>→<span style="color: red">オンライン</span></td>
                 <td class="lesson">独自テーマプログラミング2</td>
             </tr>
             <tr>