diff --git a/build/registry/pkg/distribution/index.go b/build/registry/pkg/distribution/index.go
index 8e9bb7c5..9dcb8be8 100644
--- a/build/registry/pkg/distribution/index.go
+++ b/build/registry/pkg/distribution/index.go
@@ -45,6 +45,7 @@ func pluginToIndexEntry(p registry.Plugin, registry, repo string) *index.Entry {
 		Name:        p.Name,
 		Type:        string(falcoctloci.Plugin),
 		Registry:    registry,
+		Signature:   &p.Signature,
 		Repository:  repo,
 		Description: p.Description,
 		Home:        p.URL,
@@ -60,6 +61,7 @@ func pluginRulesToIndexEntry(p registry.Plugin, registry, repo string) *index.En
 		Name:        p.Name + common.RulesArtifactSuffix,
 		Type:        string(falcoctloci.Rulesfile),
 		Registry:    registry,
+		Signature:   &p.Signature,
 		Repository:  repo,
 		Description: p.Description,
 		Home:        p.URL,