diff --git a/Library/Homebrew/bintray.rb b/Library/Homebrew/bintray.rb
index 5d4b05f36a..26b9583184 100644
--- a/Library/Homebrew/bintray.rb
+++ b/Library/Homebrew/bintray.rb
@@ -3,6 +3,9 @@
 require "utils/curl"
 require "json"
 
+# Bintray API client.
+#
+# @api private
 class Bintray
   include Context