diff --git a/Library/Homebrew/download_strategy.rbi b/Library/Homebrew/download_strategy.rbi
index 332786054d..4fe282238f 100644
--- a/Library/Homebrew/download_strategy.rbi
+++ b/Library/Homebrew/download_strategy.rbi
@@ -1,6 +1,18 @@
 # typed: strict
 
 module AbstractDownloadStrategy::Pourable
-  include Kernel
   requires_ancestor { AbstractDownloadStrategy }
 end
+
+class Mechanize::HTTP
+  ContentDisposition = Struct.new :type, :filename, :creation_date,
+    :modification_date, :read_date, :size, :parameters
+end
+
+class Mechanize::HTTP::ContentDispositionParser
+  sig {
+    params(content_disposition: String, header: T::Boolean)
+    .returns(T.nilable(Mechanize::HTTP::ContentDisposition))
+  }
+  def parse(content_disposition, header = false); end
+end