diff --git a/.rdoc_options b/.rdoc_options
index a0dc1d0a31..27d35e2f58 100644
--- a/.rdoc_options
+++ b/.rdoc_options
@@ -20,3 +20,5 @@ autolink_excluded_words:
 - RDoc
 - Ruby
 - Set
+
+canonical_root: https://docs.ruby-lang.org/en/master