diff --git a/setup.py b/setup.py
index 6b174af..ffd2f3b 100644
--- a/setup.py
+++ b/setup.py
@@ -43,7 +43,7 @@ later (LGPLv2+)',
         'suds_requests >= 0.3',
         'reportlab',
         'pytz',
-        'zeep'
+        'zeep <= 3.3'
     ],
     test_suite='nose.collector',
     tests_require=[