diff --git a/tests/flow_expire.py b/tests/flow_expire.py
index 0467e4b..ccbad20 100644
--- a/tests/flow_expire.py
+++ b/tests/flow_expire.py
@@ -83,3 +83,4 @@
         self.assertEqual(match, response.match,
                          'Flow table entry does not match')
         
+        sleep(1)