diff --git a/lago_python_client/models/billable_metric.py b/lago_python_client/models/billable_metric.py
index 46bcbd3..fa64743 100644
--- a/lago_python_client/models/billable_metric.py
+++ b/lago_python_client/models/billable_metric.py
@@ -19,6 +19,8 @@ class BillableMetric(BaseModel):
     code: Optional[str]
     description: Optional[str]
     recurring: Optional[bool]
+    rounding_function: Optional[str]
+    rounding_precision: Optional[int]
     aggregation_type: Optional[str]
     weighted_interval: Optional[str]
     expression: Optional[str]
@@ -32,6 +34,8 @@ class BillableMetricResponse(BaseResponseModel):
     code: str
     description: Optional[str]
     recurring: Optional[bool]
+    rounding_function: Optional[str]
+    rounding_precision: Optional[int]
     aggregation_type: Optional[str]
     weighted_interval: Optional[str]
     expression: Optional[str]
diff --git a/tests/fixtures/billable_metric.json b/tests/fixtures/billable_metric.json
index a7ab7c4..c37af8f 100644
--- a/tests/fixtures/billable_metric.json
+++ b/tests/fixtures/billable_metric.json
@@ -7,6 +7,8 @@
     "aggregation_type": "sum_agg",
     "weighted_interval": null,
     "recurring": false,
+    "rounding_function": "round",
+    "rounding_precision": 2,
     "expression": "1 + 2",
     "field_name": "amount_sum",
     "created_at": "2022-04-29T08:59:51Z",
diff --git a/tests/fixtures/billable_metric_index.json b/tests/fixtures/billable_metric_index.json
index d17df3b..b9eb15f 100644
--- a/tests/fixtures/billable_metric_index.json
+++ b/tests/fixtures/billable_metric_index.json
@@ -8,6 +8,8 @@
       "aggregation_type": "sum_agg",
       "weighted_interval": null,
       "recurring": false,
+      "rounding_function": "round",
+      "rounding_precision": 2,
       "expression": "1 + 2",
       "field_name": "amount_sum",
       "created_at": "2022-04-29T08:59:51Z",
@@ -24,6 +26,8 @@
       "aggregation_type": "sum_agg",
       "weighted_interval": null,
       "recurring": false,
+      "rounding_function": "round",
+      "rounding_precision": 2,
       "expression": "1 + 2",
       "field_name": "amount_sum",
       "created_at": "2022-04-30T08:59:51Z",