diff --git a/areachart/difference-chart-v2/index.html b/areachart/difference-chart-v2/index.html
index 027af0e..5da5ba4 100644
--- a/areachart/difference-chart-v2/index.html
+++ b/areachart/difference-chart-v2/index.html
@@ -28,7 +28,7 @@ <h1 class="py-8 text-2xl font-bold">差异图-v2</h1>
         class="text-blue-500 hover:text-blue-600 underline transition-colors duration-300">首页</a>
       <a href="https://observablehq.com/@benbinbin/difference-chart" target="_blank"
         class="text-blue-500 hover:text-blue-600 underline transition-colors duration-300">参考</a>
-      <a href="https://github.com/Benbinbin/d3-learning/tree/main/areachart/difference-chart/" target="_blank"
+      <a href="https://github.com/Benbinbin/d3-learning/tree/main/areachart/difference-chart-v2/" target="_blank"
         class="text-blue-500 hover:text-blue-600 underline transition-colors duration-300">代码</a>
       <a href="https://datavis-note.benbinbin.com/article/d3/chart-example/d3-chart-example-area-chart#差异图"
         target="_blank" class="text-blue-500 hover:text-blue-600 underline transition-colors duration-300">笔记</a>
diff --git a/index.html b/index.html
index c8c78b1..45517e2 100644
--- a/index.html
+++ b/index.html
@@ -416,6 +416,12 @@ <h3 class="pb-4 text-xl font-bold text-gray-700">{{ example.name }}</h3>
                 folder: 'difference-chart',
                 note: 'https://datavis-note.benbinbin.com/article/d3/chart-example/d3-chart-example-area-chart#差异图'
               },
+              {
+                name: '差异图 v2',
+                reference: 'https://observablehq.com/@benbinbin/difference-chart',
+                folder: 'difference-chart-v2',
+                note: 'https://datavis-note.benbinbin.com/article/d3/chart-example/d3-chart-example-area-chart#差异图'
+              },
             ]
           },
           {