diff --git a/Library/Homebrew/cask/artifact/relocated.rb b/Library/Homebrew/cask/artifact/relocated.rb
index dd529b5dba..d2a6716914 100644
--- a/Library/Homebrew/cask/artifact/relocated.rb
+++ b/Library/Homebrew/cask/artifact/relocated.rb
@@ -42,7 +42,7 @@ module Cask
       attr_reader :source, :target
 
       sig {
-        params(cask: Cask, source: T.nilable(T.any(String, Pathname)), target_hash: String)
+        params(cask: Cask, source: T.nilable(T.any(String, Pathname)), target_hash: T.any(String, Pathname))
           .void
       }
       def initialize(cask, source, **target_hash)