diff --git a/api/@internal/component/ets/gauge.d.ts b/api/@internal/component/ets/gauge.d.ts
index 5186c6c7748337777aa9d14805ad6d5afb73b19a..cee7e983f4156cfe868dd554d96a19802c195cd0 100644
--- a/api/@internal/component/ets/gauge.d.ts
+++ b/api/@internal/component/ets/gauge.d.ts
@@ -59,7 +59,7 @@ declare class GaugeAttribute extends CommonMethod<GaugeAttribute> {
    * Sets the thickness of the ring chart.
    * @since 8
    */
-  strokeWidth(length: number): GaugeAttribute;
+  strokeWidth(length: Length): GaugeAttribute;
 }
 
 declare const Gauge: GaugeInterface;