diff --git a/chartjs/chart.d.ts b/chartjs/chart.d.ts
index 62f393b8a1..464655f78c 100644
--- a/chartjs/chart.d.ts
+++ b/chartjs/chart.d.ts
@@ -136,6 +136,8 @@ interface BarChartOptions extends ChartOptions {
     barStrokeWidth?: number;
     barValueSpacing?: number;
     barDatasetSpacing?: number;
+    scaleShowHorizontalLines?: boolean;
+    scaleShowVerticalLines?: boolean;    
 }
 
 interface RadarChartOptions extends ChartSettings {