diff --git a/internal/provider/data_source_manufacturers.go b/internal/provider/data_source_manufacturers.go
index 3fa34e0..f03ab04 100644
--- a/internal/provider/data_source_manufacturers.go
+++ b/internal/provider/data_source_manufacturers.go
@@ -76,6 +76,7 @@ func dataSourceManufacturers() *schema.Resource {
 							Description: "Notes for manufacturer.",
 							Type:        schema.TypeString,
 							Optional:    true,
+							Computed:    true,
 						},
 						"platform_count": {
 							Description: "Manufacturer's platform count.",
diff --git a/internal/provider/resource_manufacturer.go b/internal/provider/resource_manufacturer.go
index 67cfab7..f7d3bbd 100644
--- a/internal/provider/resource_manufacturer.go
+++ b/internal/provider/resource_manufacturer.go
@@ -74,6 +74,7 @@ func resourceManufacturer() *schema.Resource {
 				Description: "Notes for manufacturer.",
 				Type:        schema.TypeString,
 				Optional:    true,
+				Computed:    true,
 			},
 			"platform_count": {
 				Description: "Manufacturer's platform count.",