diff --git a/github/billing.go b/github/billing.go
index bb6f8ec49ea..8a0e55c02bf 100644
--- a/github/billing.go
+++ b/github/billing.go
@@ -121,7 +121,7 @@ type UsageItem struct {
 	Date           string  `json:"date"`
 	Product        string  `json:"product"`
 	SKU            string  `json:"sku"`
-	Quantity       int     `json:"quantity"`
+	Quantity       float64 `json:"quantity"`
 	UnitType       string  `json:"unitType"`
 	PricePerUnit   float64 `json:"pricePerUnit"`
 	GrossAmount    float64 `json:"grossAmount"`
diff --git a/github/billing_test.go b/github/billing_test.go
index 7d1baa9719f..fdd7c471972 100644
--- a/github/billing_test.go
+++ b/github/billing_test.go
@@ -407,7 +407,7 @@ func TestBillingService_GetOrganizationUsageReport(t *testing.T) {
 				Date:             "2023-08-01",
 				Product:          "Actions",
 				SKU:              "Actions Linux",
-				Quantity:         100,
+				Quantity:         100.0,
 				UnitType:         "minutes",
 				PricePerUnit:     0.008,
 				GrossAmount:      0.8,
@@ -488,7 +488,7 @@ func TestBillingService_GetUsageReport(t *testing.T) {
 				Date:           "2023-08-15",
 				Product:        "Codespaces",
 				SKU:            "Codespaces Linux",
-				Quantity:       50,
+				Quantity:       50.0,
 				UnitType:       "hours",
 				PricePerUnit:   0.18,
 				GrossAmount:    9.0,