diff --git a/types/chrome/chrome-cast/index.d.ts b/types/chrome/chrome-cast/index.d.ts
index 7107f769ea..b333f5c347 100644
--- a/types/chrome/chrome-cast/index.d.ts
+++ b/types/chrome/chrome-cast/index.d.ts
@@ -990,6 +990,7 @@ declare namespace chrome.cast.media {
         customData: Object;
         idleReason: chrome.cast.media.IdleReason;
         items: Array<chrome.cast.media.QueueItem>;
+        liveSeekableRange?: chrome.cast.media.LiveSeekableRange;
         loadingItemId: number;
         media: chrome.cast.media.MediaInfo;
         mediaSessionId: number;
@@ -1261,6 +1262,24 @@ declare namespace chrome.cast.media {
         fontStyle: chrome.cast.media.TextTrackFontStyle;
         customData: Object;
     }
+    
+    export class LiveSeekableRange {
+        /**
+         * @constructor
+             * @see https://developers.google.com/cast/docs/reference/chrome/chrome.cast.media.LiveSeekableRange
+         */
+        constructor(
+            start?: number,
+            end?: number,
+            isMovingWindow?: boolean,
+            isLiveDone?: boolean
+        );
+        
+        start?: number;
+        end?: number;
+        isMovingWindow?: boolean;
+        isLiveDone?: boolean;
+    }
 }
 
 /**
diff --git a/types/chromecast-caf-sender/index.d.ts b/types/chromecast-caf-sender/index.d.ts
index 5200d0fbc6..71de59f123 100644
--- a/types/chromecast-caf-sender/index.d.ts
+++ b/types/chromecast-caf-sender/index.d.ts
@@ -75,7 +75,8 @@ declare namespace cast.framework {
     DISPLAY_STATUS_CHANGED = "displayStatusChanged",
     MEDIA_INFO_CHANGED = "mediaInfoChanged",
     IMAGE_URL_CHANGED = "imageUrlChanged",
-    PLAYER_STATE_CHANGED = "playerStateChanged"
+    PLAYER_STATE_CHANGED = "playerStateChanged",
+    LIVE_SEEKABLE_RANGE_CHANGED = "liveSeekableRange"
   }
 
   enum ActiveInputState {
@@ -236,6 +237,7 @@ declare namespace cast.framework {
     statusText: string;
     title: string;
     displayStatus: string;
+    liveSeekableRange?: chrome.cast.media.LiveSeekableRange;
     mediaInfo?: chrome.cast.media.MediaInfo;
     imageUrl: string | null;
     playerState: chrome.cast.media.PlayerState | null;