diff --git a/docs/en-us/toc.yml b/docs/en-us/toc.yml
index 682005dbb8..89376fea57 100644
--- a/docs/en-us/toc.yml
+++ b/docs/en-us/toc.yml
@@ -327,6 +327,6 @@
           - name: ExecutionEngine
             href: /docs/en-us/reference/scapi/fw/dotnet/System/ExecutionEngine.md
   - name: SDK API (C#)
-    href: https://docs.neo.org/developerguide/en/api/
+    href: https://docs.neo.org/developerguide/en/api/index.html
   - name: NeoVM Instructions
     href: /docs/en-us/reference/neo_vm.md
\ No newline at end of file
diff --git a/docs/zh-cn/toc.yml b/docs/zh-cn/toc.yml
index 6b60c203af..d4b2102abd 100644
--- a/docs/zh-cn/toc.yml
+++ b/docs/zh-cn/toc.yml
@@ -341,6 +341,6 @@
           - name: ExecutionEngine
             href: /docs/zh-cn/reference/scapi/fw/dotnet/System/ExecutionEngine.md
   - name: SDK API (C#)
-    href: https://docs.neo.org/developerguide/zh/api/
+    href: https://docs.neo.org/developerguide/zh/api/index.html
   - name: NeoVM 指令集
     href: /docs/zh-cn/reference/neo_vm.md
\ No newline at end of file