diff --git a/Library/Homebrew/github_packages.rb b/Library/Homebrew/github_packages.rb
index d64209fe33..39625162c5 100644
--- a/Library/Homebrew/github_packages.rb
+++ b/Library/Homebrew/github_packages.rb
@@ -429,7 +429,7 @@ class GitHubPackages
                      "org.opencontainers.image.ref.name" => version_rebuild)
 
     puts
-    args = ["copy", "--retry-times=3", "--all", "oci:#{root}", image_uri.to_s]
+    args = ["copy", "--retry-times=3", "--format=oci", "--all", "oci:#{root}", image_uri.to_s]
     if dry_run
       puts "#{skopeo} #{args.join(" ")} --dest-creds=#{user}:$HOMEBREW_GITHUB_PACKAGES_TOKEN"
     else