diff --git a/buildpacks/ruby/buildpack.toml b/buildpacks/ruby/buildpack.toml
index d3690474..6b20e3d0 100644
--- a/buildpacks/ruby/buildpack.toml
+++ b/buildpacks/ruby/buildpack.toml
@@ -19,5 +19,5 @@ type = "BSD-3-Clause"
 
 [metadata]
 [metadata.release]
-[metadata.release.docker]
+[metadata.release.image]
 repository = "docker.io/heroku/buildpack-ruby"