diff --git a/ts/background.ts b/ts/background.ts
index f4a121f15c..a5da8d2c74 100644
--- a/ts/background.ts
+++ b/ts/background.ts
@@ -2171,6 +2171,7 @@ export async function startApp(): Promise<void> {
             'gv2-3': true,
             'gv1-migration': true,
             senderKey: true,
+            changeNumber: true,
           });
         } catch (error) {
           window.log.error(
diff --git a/ts/textsecure/WebAPI.ts b/ts/textsecure/WebAPI.ts
index 17c6f5ba84..ddfa8e1bed 100644
--- a/ts/textsecure/WebAPI.ts
+++ b/ts/textsecure/WebAPI.ts
@@ -767,12 +767,14 @@ export type CapabilitiesType = {
   gv2: boolean;
   'gv1-migration': boolean;
   senderKey: boolean;
+  changeNumber: boolean;
 };
 export type CapabilitiesUploadType = {
   announcementGroup: true;
   'gv2-3': true;
   'gv1-migration': true;
   senderKey: true;
+  changeNumber: true;
 };
 
 type StickerPackManifestType = any;
@@ -1506,6 +1508,7 @@ export function initialize({
         'gv2-3': true,
         'gv1-migration': true,
         senderKey: true,
+        changeNumber: true,
       };
 
       const { accessKey, uuid } = options;