diff --git a/docs/gantt.md b/docs/gantt.md
index eb3dfff29..6363011d7 100755
--- a/docs/gantt.md
+++ b/docs/gantt.md
@@ -15,7 +15,17 @@ gantt
     Task in sec      :2014-01-12  , 12d
     another task      : 24d
 ```
-
+```mermaid
+gantt
+    title A Gantt Diagram
+    dateFormat  YYYY-MM-DD
+    section Section
+    A task           :a1, 2014-01-01, 30d
+    Another task     :after a1  , 20d
+    section Another
+    Task in sec      :2014-01-12  , 12d
+    another task      : 24d
+```
 ## Syntax
 
 ```