diff --git a/index.d.ts b/index.d.ts
index 3088f6d..25d402b 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -10,7 +10,7 @@ export interface AutoHeightImageProps extends ImageProps {
   width: number;
   fallbackSource?: number | TSource;
   onHeightChange?: (height: number) => void;
-  animated: boolean;
+  animated?: boolean;
 }
 
 declare class AutoHeightImage extends React.Component<