diff --git a/bin/build-tw-org.sh b/bin/build-tw-org.sh
index a2e7c02a4..979f1e8a2 100755
--- a/bin/build-tw-org.sh
+++ b/bin/build-tw-org.sh
@@ -41,7 +41,7 @@ echo "Using TWORG_BUILD_OUTPUT as [$TWORG_BUILD_OUTPUT]"
 
 # Pull existing GitHub pages content
 
-git clone --depth=1 --branch=master "https://github.com/TiddlyWiki/tiddlywiki.org-gh-pages.git" $TWORG_BUILD_OUTPUT
+git clone --depth=1 --branch=main "https://github.com/TiddlyWiki/tiddlywiki.org-gh-pages.git" $TWORG_BUILD_OUTPUT
 
 # Make the CNAME file that GitHub Pages requires