diff --git a/doc/cask_language_reference/readme.md b/doc/cask_language_reference/readme.md
index 85d51f7164..6fb578e7ed 100644
--- a/doc/cask_language_reference/readme.md
+++ b/doc/cask_language_reference/readme.md
@@ -137,6 +137,7 @@ app
 pkg
 installer
 binary
+manpage
 colorpicker
 dictionary
 font