diff --git a/index.d.ts b/index.d.ts
index ae31dc4..de9b781 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1717,6 +1717,8 @@ declare namespace WAWebJS {
         lastMessage: Message,
         /** Indicates if the Chat is pinned */
         pinned: boolean,
+        /** Indicates if the Chat is locked */
+        isLocked: boolean,
 
         /** Archives this chat */
         archive: () => Promise<void>,
diff --git a/src/structures/Chat.js b/src/structures/Chat.js
index 93d9a0c..9cd7679 100644
--- a/src/structures/Chat.js
+++ b/src/structures/Chat.js
@@ -63,6 +63,12 @@ class Chat extends Base {
          */
         this.pinned = !!data.pin;
 
+        /**
+         * Indicates if the Chat is locked
+         * @type {boolean}
+         */
+        this.isLocked = data.isLocked;
+
         /**
          * Indicates if the chat is muted or not
          * @type {boolean}