diff --git a/Library/Homebrew/github_packages.rb b/Library/Homebrew/github_packages.rb
index 32d9ba272ba6e..8c111ab57f4af 100644
--- a/Library/Homebrew/github_packages.rb
+++ b/Library/Homebrew/github_packages.rb
@@ -458,7 +458,7 @@ def write_image_layout(root)
   def write_tar_gz(local_file, blobs)
     tar_gz_sha256 = Digest::SHA256.file(local_file)
                                   .hexdigest
-    FileUtils.cp local_file, blobs/tar_gz_sha256
+    FileUtils.ln local_file, blobs/tar_gz_sha256
     tar_gz_sha256
   end