diff --git a/doc/source/_templates/layout.html b/doc/source/_templates/layout.html
index f524a1bd..1039c4f7 100644
--- a/doc/source/_templates/layout.html
+++ b/doc/source/_templates/layout.html
@@ -4,7 +4,7 @@
 
 <a class="github" href="https://github.com/{{ github_user }}/{{ github_repo }}">
     <img style="position: absolute; top: 0; right: 0; border: 0;"
-         src="https://raw.githubusercontent.com/{{ github_user }}/{{ github_repo }}/refs/heads/main/doc/source/_static/github-banner.svg"
+         src="https://raw.githubusercontent.com/{{ github_user }}/{{ github_repo }}/refs/heads/master/doc/source/_static/github-banner.svg"
          alt="Fork me on GitHub" />
 </a>