diff --git a/_includes/sidebar.html b/_includes/sidebar.html
index 1b76a9671..597fbc56c 100644
--- a/_includes/sidebar.html
+++ b/_includes/sidebar.html
@@ -1,3 +1,9 @@
+<h1 class="top_logo">
+  <a href="{{base}}{{ site.baseurl }}">
+    <img src="{{base}}{{ site.baseurl }}/images/rubima_logo.png" height="82" width="135" alt="るびま">
+  </a>
+</h1>
+
 {% comment %}
 _includes/index_toc.md に従って表紙原稿のフロントマターに記載された情報から各号目次をサイバーに生成します
 {% endcomment %}
diff --git a/css/theme.css b/css/theme.css
index 473000120..6a0a56790 100644
--- a/css/theme.css
+++ b/css/theme.css
@@ -20,7 +20,7 @@ body {
 
 .sidebar {
     background-color: #900;
-    background: url(../images/rubima_logo_left.png) top no-repeat, url(../images/rubima_sidebar.png) bottom repeat-y;
+    background: url(../images/rubima_sidebar_top.png) top no-repeat, url(../images/rubima_sidebar.png) bottom repeat-y;
     top: 0em;
     left: 0px;
     width: 150px;
@@ -31,6 +31,11 @@ body {
     float: left;
 }
 
+.sidebar h1.top_logo {
+    margin: -99px 0px 17px -15px;
+    padding: 0px 0px 13px;
+}
+
 .sidebar h4 {
     font-size: small;
     padding-right: 8px;
diff --git a/images/rubima_logo_left.png b/images/rubima_logo_left.png
deleted file mode 100755
index 590c736cc..000000000
Binary files a/images/rubima_logo_left.png and /dev/null differ
diff --git a/images/rubima_sidebar_top.png b/images/rubima_sidebar_top.png
new file mode 100644
index 000000000..efdf4dcbd
Binary files /dev/null and b/images/rubima_sidebar_top.png differ