diff --git a/docs/_config.yml b/docs/_config.yml
index 2745dfc..bc85d32 100644
--- a/docs/_config.yml
+++ b/docs/_config.yml
@@ -28,7 +28,7 @@ sphinx:
 repository:
   url: https://github.com/HPSCTerrSys/eCLM_static-file-generator  # Online location of your book
   path_to_book: docs    # Optional path to your book, relative to the repository root
-  branch: master        # Which branch of the repository should be used when creating links (optional)
+  branch: main        # Which branch of the repository should be used when creating links (optional)
 
 # Add GitHub buttons to your book
 # See https://jupyterbook.org/customize/config.html#add-a-link-to-your-repository