diff --git a/conf.py b/conf.py
index 0d0b76f..9dcafa7 100644
--- a/conf.py
+++ b/conf.py
@@ -125,7 +125,7 @@ html_context = {
     "display_gitlab": True, # Integrate Gitlab
     "gitlab_user": "agaric", # Organization
     "gitlab_repo": "documentation", # Repo name
-    "gitlab_version": "master", # Version
+    "gitlab_version": "main", # Version
     "conf_py_path": "/", # Path in the checkout to the docs root
 }
 
diff --git a/documentation.md b/documentation.md
index a90dece..140a87c 100644
--- a/documentation.md
+++ b/documentation.md
@@ -2,7 +2,7 @@
 
 Welcome to the meta section of our documentation where we document how to do documentation!
 
-Edit or add.  That's the primary instruction.  You can edit directly on [gitlab.com/agaric/documentation](https://gitlab.com/agaric/documentation) (for example, the edit link on this page takes you to [gitlab.com/agaric/documentation/blob/master/documentation.md](https://gitlab.com/agaric/documentation/blob/master/documentation.md)).  If you aren't a member of Agaric, GitLab will helpfully offer to fork the documentation to your own namespace so that you can make a merge request with your documentation suggestion.
+Edit or add.  That's the primary instruction.  You can edit directly on [gitlab.com/agaric/documentation](https://gitlab.com/agaric/documentation) (for example, the edit link on this page takes you to [gitlab.com/agaric/documentation/blob/main/documentation.md](https://gitlab.com/agaric/documentation/blob/main/documentation.md)).  If you aren't a member of Agaric, GitLab will helpfully offer to fork the documentation to your own namespace so that you can make a merge request with your documentation suggestion.
 
 ```{tip}
 This documentation page is a good one to copy or refer to for an example of MyST formatting.  And of course anyone can come and clean up formatting later.