diff --git a/official/projects/nhnet/raw_data_processor.py b/official/projects/nhnet/raw_data_processor.py
index adb25ac0d3c..addd8695564 100644
--- a/official/projects/nhnet/raw_data_processor.py
+++ b/official/projects/nhnet/raw_data_processor.py
@@ -16,7 +16,7 @@
 
 import collections
 import json
-import multiprocessing
+import multiprocessing.pool
 import os
 import urllib.parse