diff --git a/index.html b/index.html
index c18b284..a729e60 100644
--- a/index.html
+++ b/index.html
@@ -6,6 +6,8 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Conway's Game of Life in 3D</title>
 
+    <meta property="og:title" content="Conway's Game of Life in 3D" />
+
     <link rel="canonical" href="https://rei1024.github.io/game-of-life-3d/" />
 
     <meta name="author" content="Rei" />
@@ -16,6 +18,10 @@
       property="og:image"
       content="https://rei1024.github.io/game-of-life-3d/ogp.jpg"
     />
+    <meta
+      name="twitter:image"
+      content="https://rei1024.github.io/game-of-life-3d/ogp.jpg"
+    />
   </head>
   <body>
     <canvas id="renderCanvas"></canvas>
