diff --git a/paramiko/kex_gex.py b/paramiko/kex_gex.py
index c0455a1..71218ac 100644
--- a/paramiko/kex_gex.py
+++ b/paramiko/kex_gex.py
@@ -23,7 +23,6 @@ client side, and a B{lot} more on the server side.
 """
 
 from Crypto.Hash import SHA
-from Crypto.Util import number
 
 from paramiko.common import *
 from paramiko import util