diff --git a/prometheus_client/exposition.py b/prometheus_client/exposition.py
index fe859d7b..15110f8e 100644
--- a/prometheus_client/exposition.py
+++ b/prometheus_client/exposition.py
@@ -6,7 +6,6 @@
 import os
 import socket
 import threading
-import time
 from contextlib import closing
 from wsgiref.simple_server import make_server