diff --git a/Library/Homebrew/.rubocop_todo.yml b/Library/Homebrew/.rubocop_todo.yml
index a74f62002a..d09db085a4 100644
--- a/Library/Homebrew/.rubocop_todo.yml
+++ b/Library/Homebrew/.rubocop_todo.yml
@@ -25,7 +25,6 @@ Style/Documentation:
     - 'utils/pypi.rb'
     - 'utils/shebang.rb'
     - 'utils/shell.rb'
-    - 'utils/spdx.rb'
     - 'utils/livecheck_formula.rb'
     - 'utils/repology.rb'
     - 'version.rb'
diff --git a/Library/Homebrew/utils/spdx.rb b/Library/Homebrew/utils/spdx.rb
index 7ca5a5f8ab..9420e343d3 100644
--- a/Library/Homebrew/utils/spdx.rb
+++ b/Library/Homebrew/utils/spdx.rb
@@ -2,6 +2,9 @@
 
 require "utils/github"
 
+# Helper module for updating SPDX license data.
+#
+# @api private
 module SPDX
   module_function