diff --git a/types/chart.js/index.d.ts b/types/chart.js/index.d.ts
index 49027a2bea..8160c001a0 100644
--- a/types/chart.js/index.d.ts
+++ b/types/chart.js/index.d.ts
@@ -163,7 +163,7 @@ interface Model {
 }
 
 declare namespace Chart {
-    type ChartType = 'line' | 'bar' | 'horizontalBar' | 'radar' | 'doughnut' | 'polarArea' | 'bubble' | 'pie';
+    type ChartType = 'line' | 'bar' | 'horizontalBar' | 'radar' | 'doughnut' | 'polarArea' | 'bubble' | 'pie' | 'scatter';
 
     type TimeUnit = 'millisecond' | 'second' | 'minute' | 'hour' | 'day' | 'week' | 'month' | 'quarter' | 'year';