diff --git a/Library/README.md b/Library/README.md
index 1b39771725..17b76012f8 100644
--- a/Library/README.md
+++ b/Library/README.md
@@ -1,3 +1,3 @@
 # Library
 
-This directory contains all the code run by the official `brew` and `brew cask` commands in `Homebrew` and all formulae (package descriptions) in taps (repositories containing formulae) in `Taps` subdirectories.
+This directory contains all the code run by the official `brew` command in `Homebrew` and all formulae (package descriptions) in taps (repositories containing formulae) in `Taps` subdirectories.