diff --git a/proton b/proton
index e0e1dfa0..4eecc542 100755
--- a/proton
+++ b/proton
@@ -4,9 +4,7 @@
 
 import fcntl
 import array
-import filecmp
 import fnmatch
-import json
 import os
 import shutil
 import errno
@@ -15,7 +13,6 @@ import resource
 import stat
 import subprocess
 import sys
-import tarfile
 import shlex
 
 from ctypes import CDLL