diff --git a/check_azure_resource.py b/check_azure_resource.py
index b17712f..4d8413d 100755
--- a/check_azure_resource.py
+++ b/check_azure_resource.py
@@ -61,7 +61,7 @@ class NagiosAzureResourceMonitor(Plugin):
     """Implements functionalities to grab metrics from Azure resource objects."""
 
     DEFAULT_AZURE_SERVICE_HOST = 'management.azure.com'
-    _AZURE_METRICS_API = '2017-05-01-preview'
+    _AZURE_METRICS_API = '2018-01-01'
     _AZURE_METRICS_UNIT_SYMBOLS = {'Percent': '%', 'Bytes': 'B', 'Seconds': 's'}
 
     def __init__(self, *args, **kwargs):
@@ -166,12 +166,11 @@ def _is_dimension_required(self):
     def _get_metric_value(self):
         """Get latest metric value available for the Azure resource object."""
 
-        query = {'metric': self['metric']}
+        query = {'metricnames': self['metric']}
         if self['dimension'] is not None:
             query['$filter'] = "{} eq '{}'".format(self['dimension'], self['dimension-value'])
 
-        path = '{}/providers/Microsoft.Insights/metrics/{}'.format(self['resource'],
-                                                                   self['metric'])
+        path = '{}/providers/Microsoft.Insights/metrics/'.format(self['resource'])
 
         try:
             metric_values = _call_arm_rest_api(self._client, path,