diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index f9889eac3..b0af143ee 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -35,7 +35,7 @@ const ZOTERO_CONFIG = {
 	API_URL: 'https://api.zotero.org/',
 	PREF_BRANCH: 'extensions.zotero.',
 	BOOKMARKLET_URL: 'https://www.zotero.org/bookmarklet/',
-	VERSION: "3.0rc1"
+	VERSION: "3.0rc1.SOURCE"
 };
 
 /*