diff --git a/index.html b/index.html
index cdcb776..968bc19 100644
--- a/index.html
+++ b/index.html
@@ -40,7 +40,7 @@
 				diffTool: "http://www.aptest.com/standards/htmldiff/htmldiff.pl",
 				github: {
 					repoURL: "https://github.com/w3c/audiobooks",
-					branch: "master"
+					branch: "main"
 				},
 				localBiblio: localBiblio,
 				alternateFormats: [{