diff --git a/types/chart.js/index.d.ts b/types/chart.js/index.d.ts
index d567492602..6724d27112 100644
--- a/types/chart.js/index.d.ts
+++ b/types/chart.js/index.d.ts
@@ -130,7 +130,7 @@ declare namespace Chart {
     }
 
     interface ChartData {
-        labels?: string[];
+        labels?: Array<string | string[]>;
         datasets?: ChartDataSets[];
     }