diff --git a/easypost/easypost_client.py b/easypost/easypost_client.py
index 23159d5..9cf1276 100644
--- a/easypost/easypost_client.py
+++ b/easypost/easypost_client.py
@@ -76,7 +76,7 @@ def __init__(
         self.report = ReportService(self)
         self.scan_form = ScanFormService(self)
         self.shipment = ShipmentService(self)
-        self.smartrate = SmartRateService(self)
+        self.smart_rate = SmartRateService(self)
         self.tracker = TrackerService(self)
         self.user = UserService(self)
         self.webhook = WebhookService(self)
diff --git a/easypost/services/smartrate_service.py b/easypost/services/smartrate_service.py
index 5034231..666cb7e 100644
--- a/easypost/services/smartrate_service.py
+++ b/easypost/services/smartrate_service.py
@@ -15,7 +15,7 @@
 class SmartRateService(BaseService):
     def __init__(self, client):
         self._client = client
-        self._model_class = "Smartrate"
+        self._model_class = "SmartRate"
 
     def estimate_delivery_date(self, **params) -> List[Dict[str, Any]]:
         """Retrieve the estimated delivery date of each carrier-service level combination via the
diff --git a/tests/test_smartrate.py b/tests/test_smartrate.py
index c4f0ac9..8ab2d1e 100644
--- a/tests/test_smartrate.py
+++ b/tests/test_smartrate.py
@@ -18,7 +18,7 @@ def test_smartrate_estimate_delivery_date(
         "carriers": [usps],
     }
 
-    rates = test_client.smartrate.estimate_delivery_date(**params)
+    rates = test_client.smart_rate.estimate_delivery_date(**params)
 
     assert all(entry.get("easypost_time_in_transit_data") for entry in rates["results"])
 
@@ -40,6 +40,6 @@ def test_smartrate_recommend_ship_date(
         "carriers": [usps],
     }
 
-    rates = test_client.smartrate.recommend_ship_date(**params)
+    rates = test_client.smart_rate.recommend_ship_date(**params)
 
     assert all(entry.get("easypost_time_in_transit_data") for entry in rates["results"])