diff --git a/pytorch_sphinx_theme/theme_variables.jinja b/pytorch_sphinx_theme/theme_variables.jinja
index a1c8ebe9..dcdda6c8 100644
--- a/pytorch_sphinx_theme/theme_variables.jinja
+++ b/pytorch_sphinx_theme/theme_variables.jinja
@@ -1,7 +1,7 @@
 {%- set external_urls = {
   'github': 'https://github.com/pytorch/pytorch',
   'github_issues': 'https://github.com/pytorch/pytorch/issues',
-  'contributing': 'https://github.com/pytorch/pytorch/blob/master/CONTRIBUTING.md',
+  'contributing': 'https://github.com/pytorch/pytorch/blob/main/CONTRIBUTING.md',
   'docs': 'https://pytorch.org/docs/stable/index.html',
   'twitter': 'https://twitter.com/pytorch',
   'spotify': 'https://open.spotify.com/show/6UzHKeiy368jKfQMKKvJY5',