diff --git a/highcharts/highcharts.d.ts b/highcharts/highcharts.d.ts
index bc0a8e9a0..c7ce6a2d4 100644
--- a/highcharts/highcharts.d.ts
+++ b/highcharts/highcharts.d.ts
@@ -1715,6 +1715,7 @@ interface HighchartsCSSObject {
     color?: string;
     cursor?: string;
     font?: string;
+    fontFamily?: string;
     fontSize?: string;
     fontWeight?: string;
     left?: string;