diff --git a/examples/workflow_by_code.ipynb b/examples/workflow_by_code.ipynb
index 81dbf3e31..20fce92fe 100644
--- a/examples/workflow_by_code.ipynb
+++ b/examples/workflow_by_code.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "source": [
+    "[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/microsoft/qlib/blob/main/examples/workflow_by_code.ipynb)"
+   ],
+   "cell_type": "markdown",
+   "metadata": {}
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -369,4 +376,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 4
-}
+}
\ No newline at end of file