--- a/testing/tps/setup.py
+++ b/testing/tps/setup.py
@@ -12,16 +12,17 @@ deps = ['httplib2 == 0.9.2',
         'mozfile == 1.2',
         'mozhttpd == 0.7',
         'mozinfo == 0.10',
         'mozinstall == 1.15',
         'mozprocess == 0.26',
         'mozprofile == 1.0.0',
         'mozrunner == 6.15',
         'mozversion == 1.5',
+        'mozdevice < 1',
        ]
 
 # we only support python 2.6+ right now
 assert sys.version_info[0] == 2
 assert sys.version_info[1] >= 6
 
 setup(name='tps',
       version=version,