diff --git a/chipsec/helper/osx/helper.py b/chipsec/helper/osx/helper.py
index 62b1a193..bdcaea70 100644
--- a/chipsec/helper/osx/helper.py
+++ b/chipsec/helper/osx/helper.py
@@ -22,6 +22,7 @@ import platform
 import struct
 import subprocess
 import sys
+import shutil
 
 import chipsec
 from chipsec.helper.oshelper import OsHelperError, Helper, HWAccessViolationError, UnimplementedAPIError, UnimplementedNativeAPIError
diff --git a/chipsec/helper/win/win32helper.py b/chipsec/helper/win/win32helper.py
index 2bd9c47f..a67470d3 100644
--- a/chipsec/helper/win/win32helper.py
+++ b/chipsec/helper/win/win32helper.py
@@ -47,6 +47,7 @@ import re
 import errno
 import traceback
 import time
+import shutil
 from threading import Lock
 from collections import namedtuple
 from ctypes import *