diff --git a/npm/package-lock.json b/npm/package-lock.json
index 1010777..7aa2bd4 100644
--- a/npm/package-lock.json
+++ b/npm/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "earthstar-letterbox-layer",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/npm/package.json b/npm/package.json
index 349a0e2..99d588a 100644
--- a/npm/package.json
+++ b/npm/package.json
@@ -1,11 +1,11 @@
 {
   "name": "@earthstar-project/rich-threads-layer",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "",
   "main": "index.cjs",
   "module": "index.js",
   "scripts": {
-    "prepublish": "npm run build-types",
+    "prepare": "npm run build-types",
     "build-types": "./node_modules/.bin/dts-bundle-generator --config dts-bundle.config.json"
   },
   "types": "index.d.ts",
diff --git a/src/letterbox_layer.ts b/src/letterbox_layer.ts
index e9e2349..17b1324 100644
--- a/src/letterbox_layer.ts
+++ b/src/letterbox_layer.ts
@@ -84,7 +84,7 @@ export default class LetterboxLayer {
     return parseInt(rootTimestamp);
   }
 
-  getPostTimestamp(postDoc: Document): number {
+  getReplyTimestamp(postDoc: Document): number {
     const { replyTimestamp } = extractTemplateVariablesFromPath(
       threadReplyTemplate,
       postDoc.path,
@@ -93,6 +93,14 @@ export default class LetterboxLayer {
     return parseInt(replyTimestamp);
   }
 
+  getPostTimestamp(postDoc: Document): number {
+    if (isRootPost(postDoc)) {
+      return this.getThreadRootTimestamp(postDoc);
+    }
+
+    return this.getReplyTimestamp(postDoc);
+  }
+
   _docToThreadRoot(rootDoc: Document): Post {
     const { rootTimestamp } = extractTemplateVariablesFromPath(
       threadRootTemplate,