diff --git a/Casks/b/blackhole-2ch.rb b/Casks/b/blackhole-2ch.rb
index c116b8df83..ae08519ee9 100644
--- a/Casks/b/blackhole-2ch.rb
+++ b/Casks/b/blackhole-2ch.rb
@@ -7,6 +7,8 @@ cask "blackhole-2ch" do
   desc "Virtual Audio Driver"
   homepage "https://existential.audio/blackhole/"
 
+  # The upstream website doesn't provide version information. We check GitHub
+  # releases as a best guess of when a new version is released.
   livecheck do
     url "https://github.com/ExistentialAudio/BlackHole"
     strategy :github_latest