diff --git a/cmd/osbuild-worker/jobimpl-koji-finalize.go b/cmd/osbuild-worker/jobimpl-koji-finalize.go
index ee432532b..20be960ae 100644
--- a/cmd/osbuild-worker/jobimpl-koji-finalize.go
+++ b/cmd/osbuild-worker/jobimpl-koji-finalize.go
@@ -119,6 +119,7 @@ func (impl *KojiFinalizeJobImpl) Run(job worker.Job) error {
 	var outputs []koji.BuildOutput
 	// Extra info for each image output is stored using the image filename as the key
 	imgOutputsExtraInfo := map[string]koji.ImageExtraInfo{}
+	manifestOutputsExtraInfo := map[string]*koji.ManifestExtraInfo{}
 
 	var osbuildResults []worker.OSBuildJobResult
 	initArgs, osbuildResults, err = extractDynamicArgs(job)
@@ -249,6 +250,8 @@ func (impl *KojiFinalizeJobImpl) Run(job worker.Job) error {
 				manifestExtraInfo.Info = manifestInfo
 			}
 
+			manifestOutputsExtraInfo[kojiTargetOptions.OSBuildManifest.Filename] = &manifestExtraInfo
+
 			outputs = append(outputs, koji.BuildOutput{
 				BuildRootID:  uint64(i),
 				Filename:     kojiTargetOptions.OSBuildManifest.Filename,
@@ -291,6 +294,7 @@ func (impl *KojiFinalizeJobImpl) Run(job worker.Job) error {
 			TypeInfo: koji.TypeInfoBuild{
 				Image: imgOutputsExtraInfo,
 			},
+			Manifest: manifestOutputsExtraInfo,
 		},
 	}
 
diff --git a/internal/upload/koji/koji.go b/internal/upload/koji/koji.go
index 19b181b46..f652cbbd4 100644
--- a/internal/upload/koji/koji.go
+++ b/internal/upload/koji/koji.go
@@ -53,6 +53,10 @@ type TypeInfoBuild struct {
 // It is a free-form map, but must contain at least the 'typeinfo' key.
 type BuildExtra struct {
 	TypeInfo TypeInfoBuild `json:"typeinfo"`
+	// Manifest holds extra metadata about osbuild manifests attached to the build.
+	// It is a map whose keys are the filenames of the manifests, and
+	// the values are the extra metadata for the manifest.
+	Manifest map[string]*ManifestExtraInfo `json:"osbuild_manifest,omitempty"`
 }
 
 // Build represents a Koji build and holds metadata about it.