diff --git a/misc/prepfish.py b/misc/prepfish.py
index 00c5c2e1..5c6ece7a 100644
--- a/misc/prepfish.py
+++ b/misc/prepfish.py
@@ -18,6 +18,7 @@ import fcntl
 import json
 from select import select
 import glob
+import hashlib
 import socket
 import struct
 import os