diff --git a/example/trade_derivatives_en.ipynb b/example/trade_derivatives_en.ipynb
index bb43a24..0b96baf 100644
--- a/example/trade_derivatives_en.ipynb
+++ b/example/trade_derivatives_en.ipynb
@@ -52,19 +52,6 @@
      "name": "#%%\n"
     }
    },
-   "outputs": [
-    {
-     "ename": "ModuleNotFoundError",
-     "evalue": "No module named 'okx'",
-     "output_type": "error",
-     "traceback": [
-      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
-      "\u001b[0;31mModuleNotFoundError\u001b[0m                       Traceback (most recent call last)",
-      "Cell \u001b[0;32mIn [1], line 1\u001b[0m\n\u001b[0;32m----> 1\u001b[0m \u001b[38;5;28;01mimport\u001b[39;00m \u001b[38;5;21;01mokx\u001b[39;00m\u001b[38;5;21;01m.\u001b[39;00m\u001b[38;5;21;01mTrade\u001b[39;00m \u001b[38;5;28;01mas\u001b[39;00m \u001b[38;5;21;01mTrade\u001b[39;00m\n",
-      "\u001b[0;31mModuleNotFoundError\u001b[0m: No module named 'okx'"
-     ]
-    }
-   ],
    "source": [
     "import okx.Trade as Trade"
    ]