diff --git a/shell/matrix/client.go b/shell/matrix/client.go
index 6c82a9c..88f1329 100644
--- a/shell/matrix/client.go
+++ b/shell/matrix/client.go
@@ -14,6 +14,7 @@ import (
 	"strings"
 
 	"github.com/yuin/goldmark"
+	"github.com/yuin/goldmark/extension"
 	"maunium.net/go/mautrix"
 	"maunium.net/go/mautrix/crypto"
 	"maunium.net/go/mautrix/crypto/cryptohelper"
@@ -285,10 +286,20 @@ func (c *Client) SendMarkdown(ctx context.Context, roomID, markdown string) erro
 	return err
 }
 
-// mdToHTML converts a Markdown string to HTML using goldmark.
+// mdToHTML converts a Markdown string to HTML using goldmark with full extensions.
+var mdParser = goldmark.New(
+	goldmark.WithExtensions(
+		extension.GFM,
+		extension.DefinitionList,
+		extension.Footnote,
+		extension.Typographer,
+		extension.CJK,
+	),
+)
+
 func mdToHTML(md string) string {
 	var buf bytes.Buffer
-	if err := goldmark.Convert([]byte(md), &buf); err != nil {
+	if err := mdParser.Convert([]byte(md), &buf); err != nil {
 		return md // fallback to raw markdown on error
 	}
 	return buf.String()