diff --git a/types/chart.js/index.d.ts b/types/chart.js/index.d.ts
index e16b87aa0e..ef9e8b0675 100644
--- a/types/chart.js/index.d.ts
+++ b/types/chart.js/index.d.ts
@@ -411,8 +411,8 @@ declare namespace Chart {
     interface ChartDataSets {
         cubicInterpolationMode?: 'default' | 'monotone';
         backgroundColor?: ChartColor | ChartColor[];
-        borderWidth?: number;
-        borderColor?: ChartColor;
+        borderWidth?: number | number[];
+        borderColor?: ChartColor | ChartColor[];
         borderCapStyle?: string;
         borderDash?: number[];
         borderDashOffset?: number;