diff --git a/src/Message.ts b/src/Message.ts
index b33a08b31..9edf0d677 100644
--- a/src/Message.ts
+++ b/src/Message.ts
@@ -189,16 +189,16 @@ export class MessageV1 extends MessageBase implements proto.MessageV1 {
 export class MessageV2 extends MessageBase implements proto.MessageV2 {
   senderAddress: string | undefined
   private header: proto.MessageHeaderV2
-  senderHmac: Uint8Array
-  shouldPush: boolean
+  senderHmac?: Uint8Array
+  shouldPush?: boolean
 
   constructor(
     id: string,
     bytes: Uint8Array,
     obj: proto.Message,
     header: proto.MessageHeaderV2,
-    senderHmac: Uint8Array,
-    shouldPush: boolean
+    senderHmac?: Uint8Array,
+    shouldPush?: boolean
   ) {
     super(id, bytes, obj)
     this.header = header
@@ -210,8 +210,8 @@ export class MessageV2 extends MessageBase implements proto.MessageV2 {
     obj: proto.Message,
     header: proto.MessageHeaderV2,
     bytes: Uint8Array,
-    senderHmac: Uint8Array,
-    shouldPush: boolean
+    senderHmac?: Uint8Array,
+    shouldPush?: boolean
   ): Promise<MessageV2> {
     const id = bytesToHex(await sha256(bytes))