diff --git a/types/cesium/index.d.ts b/types/cesium/index.d.ts
index 967c124bac..f2bb11479c 100644
--- a/types/cesium/index.d.ts
+++ b/types/cesium/index.d.ts
@@ -1,8 +1,9 @@
-// Type definitions for cesium 1.46
+// Type definitions for cesium 1.47
 // Project: http://cesiumjs.org
 // Definitions by: Aigars Zeiza <https://github.com/Zuzon>
 //                 Harry Nicholls <https://github.com/hnipps>
 //                 Jared Szechy <https://github.com/szechyjs>
+//                 Radek Goláň jr. <https://github.com/golyalpha>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.3
 
@@ -2370,7 +2371,7 @@ declare namespace Cesium {
         stRotation: Property;
         fill: Property;
         outline: Property;
-        outlineColor: Property;
+        outlineColor: Color;
         outlineWidth: Property;
         perPositionHeight: Property;
         constructor(options?: {