diff --git a/src/api/EteSync.ts b/src/api/EteSync.ts
index fabf02f..9768d13 100644
--- a/src/api/EteSync.ts
+++ b/src/api/EteSync.ts
@@ -127,6 +127,7 @@ class BaseJournal<T extends BaseJson> extends BaseItem<T> {
 export interface JournalJson extends BaseJson {
   version: number;
   owner: string;
+  readOnly?: boolean;
   key?: base64;
 }
 
@@ -152,6 +153,10 @@ export class Journal extends BaseJournal<JournalJson> {
     return this._json.owner;
   }
 
+  get readOnly(): boolean | undefined {
+    return this._json.readOnly;
+  }
+
   get version(): number {
     return this._json.version;
   }
@@ -535,6 +540,7 @@ export class EntryManager extends BaseManager {
 export interface JournalMemberJson {
   user: string;
   key: base64;
+  readOnly?: boolean;
 }
 
 export class JournalMembersManager extends BaseManager {