diff --git a/lib/arel/nodes/limit_by.rb b/lib/arel/nodes/limit_by.rb
index cdff724b..b3d5e8d9 100644
--- a/lib/arel/nodes/limit_by.rb
+++ b/lib/arel/nodes/limit_by.rb
@@ -1,4 +1,4 @@
-module Arel
+module Arel # :nodoc: all
   module Nodes
     class LimitBy < Arel::Nodes::Unary
       attr_reader :column