diff --git a/ja-JP/index.html b/ja-JP/index.html
index f23391fc..97a9347b 100644
--- a/ja-JP/index.html
+++ b/ja-JP/index.html
@@ -4,7 +4,7 @@
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
 
-    <title>A Primer on Bézier Curves</title>
+    <title>ベジェ曲線入門</title>
     <link rel="shortcut icon" href="favicon.png" type="image/png" />
 
     <base href=".." />
@@ -16,7 +16,7 @@
     />
 
     <!-- opengraph information -->
-    <meta property="og:title" content="A Primer on Bézier Curves" />
+    <meta property="og:title" content="ベジェ曲線入門" />
     <meta
       property="og:image"
       content="https://pomax.github.io/bezierinfo/images/og-image.png"
@@ -66,7 +66,7 @@
 
   <body>
     <header>
-      <h1>A Primer on Bézier Curves</h1>
+      <h1>ベジェ曲線入門</h1>
       <h2>
         A free, online book for when you really need to know how to do Bézier
         things.
diff --git a/locale-strings.js b/locale-strings.js
index e7163a05..b9e15b5b 100644
--- a/locale-strings.js
+++ b/locale-strings.js
@@ -2,8 +2,8 @@ export default {
   "defaultLocale": "en-GB",
   "title": {
     "en-GB": "A Primer on Bézier Curves",
-    "ja-JP": "A Primer on Bézier Curves",
-    "zh-CN": "A Primer on Bézier Curves"
+    "ja-JP": "ベジェ曲線入門",
+    "zh-CN": "贝塞尔曲线底漆"
   },
   "subtitle": {
     "en-GB": "A free, online book for when you really need to know how to do Bézier things.",
diff --git a/zh-CN/index.html b/zh-CN/index.html
index a094c574..6c397e91 100644
--- a/zh-CN/index.html
+++ b/zh-CN/index.html
@@ -4,7 +4,7 @@
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
 
-    <title>A Primer on Bézier Curves</title>
+    <title>贝塞尔曲线底漆</title>
     <link rel="shortcut icon" href="favicon.png" type="image/png" />
 
     <base href=".." />
@@ -16,7 +16,7 @@
     />
 
     <!-- opengraph information -->
-    <meta property="og:title" content="A Primer on Bézier Curves" />
+    <meta property="og:title" content="贝塞尔曲线底漆" />
     <meta
       property="og:image"
       content="https://pomax.github.io/bezierinfo/images/og-image.png"
@@ -66,7 +66,7 @@
 
   <body>
     <header>
-      <h1>A Primer on Bézier Curves</h1>
+      <h1>贝塞尔曲线底漆</h1>
       <h2>
         A free, online book for when you really need to know how to do Bézier
         things.
