diff --git a/kernel/filesys/json_parser.go b/kernel/filesys/json_parser.go
index dac40d021..228c5e6a6 100644
--- a/kernel/filesys/json_parser.go
+++ b/kernel/filesys/json_parser.go
@@ -36,6 +36,7 @@ func ParseJSONWithoutFix(jsonData []byte, options *parse.Options) (ret *parse.Tr
 
 	ret = &parse.Tree{Name: "", ID: root.ID, Root: &ast.Node{Type: ast.NodeDocument, ID: root.ID, Spec: root.Spec}, Context: &parse.Context{ParseOption: options}}
 	ret.Root.KramdownIAL = parse.Map2IAL(root.Properties)
+	ret.Root.SetIALAttr("type", "doc")
 	ret.Context.Tip = ret.Root
 	if nil == root.Children {
 		return
@@ -57,6 +58,7 @@ func ParseJSON(jsonData []byte, options *parse.Options) (ret *parse.Tree, needFi
 
 	ret = &parse.Tree{Name: "", ID: root.ID, Root: &ast.Node{Type: ast.NodeDocument, ID: root.ID, Spec: root.Spec}, Context: &parse.Context{ParseOption: options}}
 	ret.Root.KramdownIAL = parse.Map2IAL(root.Properties)
+	ret.Root.SetIALAttr("type", "doc")
 	for _, kv := range ret.Root.KramdownIAL {
 		if strings.Contains(kv[1], "\n") {
 			val := kv[1]
diff --git a/kernel/filesys/tree.go b/kernel/filesys/tree.go
index f75930baa..16cd1c707 100644
--- a/kernel/filesys/tree.go
+++ b/kernel/filesys/tree.go
@@ -146,6 +146,7 @@ func prepareWriteTree(tree *parse.Tree) (data []byte, filePath string, err error
 		tree.Root.Spec = "1"
 		logging.LogInfof("migrated tree [%s] from spec [%s] to [%s]", filePath, oldSpec, tree.Root.Spec)
 	}
+	tree.Root.SetIALAttr("type", "doc")
 	renderer := render.NewJSONRenderer(tree, luteEngine.RenderOptions)
 	data = renderer.Render()
 
diff --git a/kernel/go.mod b/kernel/go.mod
index a947d3c88..85a700a83 100644
--- a/kernel/go.mod
+++ b/kernel/go.mod
@@ -9,7 +9,7 @@ require (
 	github.com/88250/clipboard v0.1.5
 	github.com/88250/epub v0.0.0-20230830085737-c19055cd1f48
 	github.com/88250/gulu v1.2.3-0.20231209020950-b7b6994e395c
-	github.com/88250/lute v1.7.7-0.20240314121716-744ca7756fe3
+	github.com/88250/lute v1.7.7-0.20240316041855-e459dd2855d6
 	github.com/88250/pdfcpu v0.3.14-0.20230401044135-c7369a99720c
 	github.com/88250/vitess-sqlparser v0.0.0-20210205111146-56a2ded2aba1
 	github.com/ClarkThan/ahocorasick v0.0.0-20231011042242-30d1ef1347f4
diff --git a/kernel/go.sum b/kernel/go.sum
index bc06174ad..7011d364c 100644
--- a/kernel/go.sum
+++ b/kernel/go.sum
@@ -12,6 +12,8 @@ github.com/88250/gulu v1.2.3-0.20231209020950-b7b6994e395c h1:Fas3hxqP33xA9KKDV5
 github.com/88250/gulu v1.2.3-0.20231209020950-b7b6994e395c/go.mod h1:pTWnjt+6qUqNnP9xltswsJxgCBVu3C7eW09u48LWX0k=
 github.com/88250/lute v1.7.7-0.20240314121716-744ca7756fe3 h1:qhyZg222TTfg1fbguxk3Nq21S1bcj+usXdJuxA0uBhk=
 github.com/88250/lute v1.7.7-0.20240314121716-744ca7756fe3/go.mod h1:+wUqx/1kdFDbWtxn9LYJlaCOAeol2pjSO6w+WJTVQsg=
+github.com/88250/lute v1.7.7-0.20240316041855-e459dd2855d6 h1:tYUMTPtZoqfX87KdKztrGKjA7UTdoEf3MS1dtj3g0vo=
+github.com/88250/lute v1.7.7-0.20240316041855-e459dd2855d6/go.mod h1:VDAzL8b+oCh+e3NAlmwwLzC53ten0rZlS8NboB7ljtk=
 github.com/88250/pdfcpu v0.3.14-0.20230401044135-c7369a99720c h1:Dl/8S9iLyPMTElnWIBxmjaLiWrkI5P4a21ivwAn5pU0=
 github.com/88250/pdfcpu v0.3.14-0.20230401044135-c7369a99720c/go.mod h1:S5YT38L/GCjVjmB4PB84PymA1qfopjEhfhTNQilLpv4=
 github.com/88250/vitess-sqlparser v0.0.0-20210205111146-56a2ded2aba1 h1:48T899JQDwyyRu9yXHePYlPdHtpJfrJEUGBMH3SMBWY=
diff --git a/kernel/model/export.go b/kernel/model/export.go
index 935403dbf..b16fef79e 100644
--- a/kernel/model/export.go
+++ b/kernel/model/export.go
@@ -2114,6 +2114,7 @@ func exportTree(tree *parse.Tree, wysiwyg, expandKaTexMacros, keepFold bool,
 
 	if addTitle {
 		if root, _ := getBlock(id, tree); nil != root {
+			root.IAL["type"] = "doc"
 			title := &ast.Node{Type: ast.NodeHeading, HeadingLevel: 1, KramdownIAL: parse.Map2IAL(root.IAL)}
 			content := html.UnescapeString(root.Content)
 			title.AppendChild(&ast.Node{Type: ast.NodeText, Tokens: []byte(content)})