diff --git a/src/server/middleware/subject/subject.go b/src/server/middleware/subject/subject.go
index c3b464325aa..cc7dac86297 100644
--- a/src/server/middleware/subject/subject.go
+++ b/src/server/middleware/subject/subject.go
@@ -129,6 +129,7 @@ func Middleware() func(http.Handler) http.Handler {
 					return err
 				}
 			}
+			w.Header().Set("OCI-Subject", subjectArt.Digest)
 		}
 
 		return nil
diff --git a/src/server/middleware/subject/subject_test.go b/src/server/middleware/subject/subject_test.go
index 29b66bd86db..aa39fb6c145 100644
--- a/src/server/middleware/subject/subject_test.go
+++ b/src/server/middleware/subject/subject_test.go
@@ -159,6 +159,7 @@ func (suite *MiddlewareTestSuite) TestSubject() {
 		suite.Equal(name, accs[0].GetData().SubArtifactRepo)
 		suite.True(accs[0].IsHard())
 		suite.Equal(accessorymodel.TypeSubject, accs[0].GetData().Type)
+		suite.Equal(subArtDigest, res.Header().Values("OCI-Subject")[0])
 	})
 }