diff --git a/doc/index.rst b/doc/index.rst
index a2ae9bbd3..7b241c0a1 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -28,7 +28,7 @@ Contents
   Python Package <python/index>
   R Package <R-package/index>
   JVM Package <jvm/index>
-  Ruby Package <https://github.com/ankane/xgb>
+  Ruby Package <https://github.com/ankane/xgboost-ruby>
   Swift Package <https://github.com/kongzii/SwiftXGBoost>
   Julia Package <julia>
   C Package <c>