diff --git a/chrome/content/zotero/xpcom/annotations.js b/chrome/content/zotero/xpcom/annotations.js
index 200f400f81..ee27952576 100644
--- a/chrome/content/zotero/xpcom/annotations.js
+++ b/chrome/content/zotero/xpcom/annotations.js
@@ -120,6 +120,9 @@ Zotero.Annotations = new function () {
 		if (!o.isAuthor) {
 			o.authorName = Zotero.Users.getName(item.createdByUserID);
 		}
+		// TODO: Replace this with the actual code that checks if user is a group admin
+		let isGroupAdmin = false;
+		o.readOnly = o.isExternal || (!o.isAuthor && !isGroupAdmin);
 		if (o.type == 'highlight') {
 			o.text = item.annotationText;
 		}
diff --git a/chrome/content/zotero/xpcom/reader.js b/chrome/content/zotero/xpcom/reader.js
index 40d445176f..731049122d 100644
--- a/chrome/content/zotero/xpcom/reader.js
+++ b/chrome/content/zotero/xpcom/reader.js
@@ -608,7 +608,6 @@ class ReaderInstance {
 			}
 			let json = await Zotero.Annotations.toJSON(item);
 			json.id = item.key;
-			json.readOnly = !json.isAuthor || json.isExternal;
 			delete json.key;
 			for (let key in json) {
 				json[key] = json[key] || '';
diff --git a/pdf-reader b/pdf-reader
index c25c3f4f8b..e6c7f500e6 160000
--- a/pdf-reader
+++ b/pdf-reader
@@ -1 +1 @@
-Subproject commit c25c3f4f8b40c964ed8eed0c81b2a8845ec1b5ee
+Subproject commit e6c7f500e60c474531b7604457f412ab449c2dde
diff --git a/pdf-worker b/pdf-worker
index 1d8e8ed20b..41f952bccf 160000
--- a/pdf-worker
+++ b/pdf-worker
@@ -1 +1 @@
-Subproject commit 1d8e8ed20b466963192ebf7aa713c1c97e9d89d7
+Subproject commit 41f952bccf4e038888791a120e41f0eeae1f2458