diff --git a/Casks/unison240.rb b/Casks/unison240.rb
deleted file mode 100644
index efa6ea2fe..000000000
--- a/Casks/unison240.rb
+++ /dev/null
@@ -1,11 +0,0 @@
-cask 'unison240' do
-  version '2.40.69'
-  sha256 '2bcc460511f2b43fa1613cc5f9ba4dd59bb12d40b5b9fb2e9f21adaf854bcf3b'
-
-  # unison-binaries.inria.fr was verified as official when first introduced to the cask
-  url "http://unison-binaries.inria.fr/files/Unison-#{version}_x64.dmg"
-  name 'Unison'
-  homepage 'https://www.cis.upenn.edu/~bcpierce/unison/'
-
-  app 'Unison.app'
-end