diff --git a/modules/docs/src/Volo.Docs.Web/Markdown/MarkDigMarkdownConverter.cs b/modules/docs/src/Volo.Docs.Web/Markdown/MarkDigMarkdownConverter.cs
index 1a19c779ba..f06a96858b 100644
--- a/modules/docs/src/Volo.Docs.Web/Markdown/MarkDigMarkdownConverter.cs
+++ b/modules/docs/src/Volo.Docs.Web/Markdown/MarkDigMarkdownConverter.cs
@@ -19,6 +19,7 @@ namespace Volo.Docs.Markdown
               .UseGridTables()
               .UsePipeTables()
               .UseHighlightedCodeBlocks()
+              .UseAlertBlocks()
               .Build();
         }