diff --git a/transcribe-service/usage.py b/transcribe-service/usage.py
index 18fabe0..7481967 100755
--- a/transcribe-service/usage.py
+++ b/transcribe-service/usage.py
@@ -22,9 +22,9 @@
 import datetime
 from shutil import copyfile
 import logging
-import threading
+import multiprocessing
 
-lock = threading.Lock()
+lock = multiprocessing.Lock()
 
 """
     This class keeps a log of the usage of a service