diff --git a/chrome/content/zotero/xpcom/sync/syncAPIClient.js b/chrome/content/zotero/xpcom/sync/syncAPIClient.js
index 9f494d2b3b..3a499c7a86 100644
--- a/chrome/content/zotero/xpcom/sync/syncAPIClient.js
+++ b/chrome/content/zotero/xpcom/sync/syncAPIClient.js
@@ -46,7 +46,7 @@ Zotero.Sync.APIClient = function (options) {
 Zotero.Sync.APIClient.prototype = {
 	MAX_OBJECTS_PER_REQUEST: 100,
 	MIN_GZIP_SIZE: 1000,
-	UPLOAD_TIMEOUT: 60000,
+	UPLOAD_TIMEOUT: 120000,
 	
 	
 	getKeyInfo: Zotero.Promise.coroutine(function* (options={}) {