diff --git a/picas/modifiers.py b/picas/modifiers.py
index 747e81f..a539372 100644
--- a/picas/modifiers.py
+++ b/picas/modifiers.py
@@ -8,6 +8,8 @@
 # Python imports
 import socket
 import time
+
+from os import environ
 from . import batchid