diff --git a/finished_files/001_equal_weight_S&P_500.ipynb b/finished_files/001_equal_weight_S&P_500.ipynb
index e8376c90a..5eaee320d 100644
--- a/finished_files/001_equal_weight_S&P_500.ipynb
+++ b/finished_files/001_equal_weight_S&P_500.ipynb
@@ -23,6 +23,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    #!pip install xlsxwriter ---execute this install if not included on your machine
     "import numpy as np #The Numpy numerical computing library\n",
     "import pandas as pd #The Pandas data science library\n",
     "import requests #The requests library for HTTP requests in Python\n",