diff --git a/.DS_Store b/.DS_Store
index c81fbc2..4306b3a 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/toroid.html b/toroid.html
index cfc0eaf..34d3425 100644
--- a/toroid.html
+++ b/toroid.html
@@ -7,7 +7,7 @@
         <link rel="stylesheet" href="toroid.css">
     </head>
     <body>
-        <header>Miguel <a href="mailto:vk3cpu@gmail.com">VK3CPU</a> - RF Toroid Calculator v1.4<br></header>
+        <header>Miguel <a href="mailto:vk3cpu@gmail.com">VK3CPU</a> - RF Toroid Calculator v1.5<br></header>
         <section class="gridLayoutClass">
             <div id="chart-container" class="chart-container">
                 <canvas id="chartCanvas" class="chartCanvasClass">
@@ -155,6 +155,8 @@
             </ul>
             <br>
             <b><u>Change history:</u></b><br>
+            <b>[29-Sep-23] - v1.5</b> <br>
+            * Added FT23 sized cores for materials 77, 75, 68, 67, 61, 52 and 43 ferrites" <br>
             <b>[24-Sep-23] - v1.4</b> <br>
             * Added Material 68 to ferrites" <br>
             <b>[4-Sep-23] - v1.3</b> <br>
