diff --git a/src/Postbuilder.ts b/src/Postbuilder.ts
index 909236d..192f1a7 100644
--- a/src/Postbuilder.ts
+++ b/src/Postbuilder.ts
@@ -299,6 +299,7 @@ export class Postbuilder {
             }
             lastPostId = (await this._poster.writeMessage(toSend.join("\n"),
                 {
+                    inReplyToId: lastPostId,
                     mediaIds: await imageUploader.attemptToUpload(4),
                     spoilerText: this._config.contentWarning
                 })).id