diff --git a/js/index.d.ts b/js/index.d.ts
index 742ffd25..ed731fa4 100644
--- a/js/index.d.ts
+++ b/js/index.d.ts
@@ -32,6 +32,10 @@ export type ProgressViewProps = ViewProps & {
    */
   trackImage?: ImageSourcePropType,
 
+  /**
+   * Turns the progress bar into an indeterminate progress bar
+   */
+  isIndeterminate?: boolean,
   accessibilityLabel?: String,
 };
 export class ProgressView extends React.Component<ProgressViewProps> {}