--- a/testing/mozharness/mozharness/base/python.py
+++ b/testing/mozharness/mozharness/base/python.py
@@ -451,17 +451,17 @@ class ResourceMonitoringMixin(object):
     after that package is installed (as part of creating the virtualenv).
     That's just the way things have to be.
     """
     def __init__(self, *args, **kwargs):
         super(ResourceMonitoringMixin, self).__init__(*args, **kwargs)
 
         self.register_virtualenv_module('psutil>=3.1.1', method='pip',
                                         optional=True)
-        self.register_virtualenv_module('mozsystemmonitor==0.1',
+        self.register_virtualenv_module('mozsystemmonitor==0.3',
                                         method='pip', optional=True)
         self._resource_monitor = None
 
     @PostScriptAction('create-virtualenv')
     def _start_resource_monitoring(self, action, success=None):
         self.activate_virtualenv()
 
         # Resource Monitor requires Python 2.7, however it's currently optional.