diff --git a/index.html b/index.html
index 53116f9..b8ff2d8 100644
--- a/index.html
+++ b/index.html
@@ -16,7 +16,18 @@
     window.$docsify = {
       loadSidebar: 'content.md',
       subMaxLevel: 2,
-      plugins: [],
+      plugins: [
+        //注入钩子，将katex目前不支持的公式环境替换为支持的
+        function (hook) {
+          hook.beforeEach(function (content) {
+            return content
+              .replace(/\\begin\{align\*\}/g, '\\begin{aligned}')
+              .replace(/\\end\{align\*\}/g, '\\end{aligned}')
+              .replace(/\\begin\{gather\*\}/g, '\\begin{gathered}')
+              .replace(/\\end\{gather\*\}/g, '\\end{gathered}');
+          });
+        }
+      ],
       name: 'Coursera吴恩达机器学习课程整理',
       repo: 'https://github.com/scruel/ML-AndrewNg-Notes'
     }