diff --git a/chapter16/multiprocess.py b/chapter16/multiprocess.py
index 83be186..7b7ccc1 100644
--- a/chapter16/multiprocess.py
+++ b/chapter16/multiprocess.py
@@ -2,6 +2,8 @@
 from bs4 import BeautifulSoup
 import re
 import random
+import pandas as pd
+import numpy as np
 
 from multiprocessing import Process, Queue
 import os