diff --git a/main.go b/main.go
index d6f2c61..e58dcb5 100644
--- a/main.go
+++ b/main.go
@@ -38,6 +38,10 @@ func run(ctx context.Context) error {
 		Title:    config.Data.Title,
 		Subtitle: config.Data.Subtitle,
 	}))
+	scatter.SetGlobalOptions(charts.WithTooltipOpts(opts.Tooltip{
+		Show:      true,
+		Formatter: `{c}`,
+	}))
 	scatter.SetGlobalOptions(charts.WithLegendOpts(opts.Legend{Show: false}))
 	scatter.SetGlobalOptions(charts.WithXAxisOpts(opts.XAxis{
 		Name:         x,