diff --git a/_includes/sidebar.html b/_includes/sidebar.html
index 80da033..2864dd3 100644
--- a/_includes/sidebar.html
+++ b/_includes/sidebar.html
@@ -10,7 +10,7 @@
 
             <li class="nav-item">
               <a class="nav-link" href="https://hub.docker.com/repositories/nppsbnl" target="_blank">
-              <span style="float:left; padding-left:0px;"><img src="{{ '/assets/images/icons/docker-svgrepo-small.png' | relative_url }}" height="12"></span>
+              <span style="float:left; padding-left:0px;"><img src="{{ '/assets/images/icons/docker-svgrepo-small.png' | relative_url }}" height="13"></span>
               &nbsp;&nbsp;ESI on DockerHub&nbsp;&nbsp;<span data-feather="external-link" style="color:lightseagreen" ></span></a>
               </a>
         </li>