diff --git a/types/plotly.js/index.d.ts b/types/plotly.js/index.d.ts
index 21ff9ceac7..a1746ce99e 100644
--- a/types/plotly.js/index.d.ts
+++ b/types/plotly.js/index.d.ts
@@ -532,13 +532,14 @@ export interface PlotData {
 	'x' | 'x+text' | 'x+name' |
 	'x+y' | 'x+y+text' | 'x+y+name' |
 	'x+y+z' | 'x+y+z+text' | 'x+y+z+name' |
-	'y+name'| 'y+x' | 'y+x+text' | 'y+x+name' |
+	'y+name' | 'y+x' | 'y+text' | 'y+x+text' | 'y+x+name' |
 	'y+z' | 'y+z+text' | 'y+z+name' |
 	'y+x+z' | 'y+x+z+text' | 'y+x+z+name' |
 	'z+x' | 'z+x+text' | 'z+x+name' |
 	'z+y+x' | 'z+y+x+text' | 'z+y+x+name' |
 	'z+x+y' | 'z+x+y+text' | 'z+x+y+name';
 	hoverlabel: Partial<Label>;
+	hovertemplate: string | string[];
 	textinfo: 'label' | 'label+text' | 'label+value' | 'label+percent' | 'label+text+value'
 	| 'label+text+percent' | 'label+value+percent' | 'text' | 'text+value' | 'text+percent'
 	| 'text+value+percent' | 'value' | 'value+percent' | 'percent' | 'none';