diff --git a/apps/api/internal/identityruntime/manager.go b/apps/api/internal/identityruntime/manager.go
index 5a9cb46..e43e10a 100644
--- a/apps/api/internal/identityruntime/manager.go
+++ b/apps/api/internal/identityruntime/manager.go
@@ -17,6 +17,7 @@ type Repository interface {
 	IdentityConfigurationRevision(context.Context, string) (identity.Revision, error)
 	ActiveIdentityConfigurationRevision(context.Context) (identity.Revision, error)
 	MarkIdentityRevisionValidated(context.Context, string, int64, string, string) (identity.Revision, error)
+	RevalidateActiveIdentityRevision(context.Context, string, int64, string, string) (identity.Revision, error)
 	MarkIdentityRevisionFailed(context.Context, string, int64, string, string, string) (identity.Revision, error)
 	ActivateIdentityRevision(context.Context, string, int64, string, string) (identity.Revision, bool, error)
 	DisableActiveIdentityRevision(context.Context, int64, string, string) (identity.Revision, error)
@@ -84,14 +85,27 @@ func (manager *Manager) Validate(ctx context.Context, id string, expectedVersion
 	if err != nil {
 		return identity.Revision{}, err
 	}
-	if revision.Version != expectedVersion || revision.State != identity.RevisionDraft && revision.State != identity.RevisionSuperseded {
+	if revision.Version != expectedVersion || revision.State != identity.RevisionDraft && revision.State != identity.RevisionSuperseded && revision.State != identity.RevisionActive {
 		return identity.Revision{}, identity.ErrRevisionConflict
 	}
 	candidate, buildErr := manager.builder.Build(ctx, revision)
 	if buildErr != nil {
-		_, _ = manager.repository.MarkIdentityRevisionFailed(ctx, id, expectedVersion, "validation_failed", traceID, auditID)
+		if revision.State != identity.RevisionActive {
+			_, _ = manager.repository.MarkIdentityRevisionFailed(ctx, id, expectedVersion, "validation_failed", traceID, auditID)
+		}
 		return identity.Revision{}, buildErr
 	}
+	if revision.State == identity.RevisionActive {
+		revalidated, err := manager.repository.RevalidateActiveIdentityRevision(ctx, id, expectedVersion, traceID, auditID)
+		if err != nil {
+			candidate.Close()
+			return identity.Revision{}, err
+		}
+		candidate.Revision = revalidated
+		old := manager.current.Swap(candidate)
+		retireRuntime(old)
+		return revalidated, nil
+	}
 	candidate.Close()
 	return manager.repository.MarkIdentityRevisionValidated(ctx, id, expectedVersion, traceID, auditID)
 }
diff --git a/apps/api/internal/identityruntime/manager_test.go b/apps/api/internal/identityruntime/manager_test.go
index 4d1f9c0..2d03e99 100644
--- a/apps/api/internal/identityruntime/manager_test.go
+++ b/apps/api/internal/identityruntime/manager_test.go
@@ -36,6 +36,15 @@ func (f *runtimeRepositoryFake) MarkIdentityRevisionValidated(_ context.Context,
 	f.revisions[id] = revision
 	return revision, nil
 }
+func (f *runtimeRepositoryFake) RevalidateActiveIdentityRevision(_ context.Context, id string, expected int64, traceID, auditID string) (identity.Revision, error) {
+	revision := f.revisions[id]
+	if revision.Version != expected || revision.State != identity.RevisionActive {
+		return identity.Revision{}, identity.ErrRevisionConflict
+	}
+	revision.Version, revision.LastTraceID, revision.LastAuditID = revision.Version+1, traceID, auditID
+	f.revisions[id], f.active = revision, revision
+	return revision, nil
+}
 func (f *runtimeRepositoryFake) MarkIdentityRevisionFailed(_ context.Context, id string, expected int64, category, _, _ string) (identity.Revision, error) {
 	revision := f.revisions[id]
 	if revision.Version != expected {
@@ -136,3 +145,20 @@ func TestRollbackValidatesAndAtomicallyReplacesActiveRuntime(t *testing.T) {
 		t.Fatalf("rollback did not replace active runtime: revision=%#v current=%#v", rolledBack, manager.Current())
 	}
 }
+
+func TestActiveRevalidationSwapsOnlyAfterSuccessfulValidation(t *testing.T) {
+	active := identity.Revision{ID: "active", State: identity.RevisionActive, Version: 4}
+	repository := &runtimeRepositoryFake{revisions: map[string]identity.Revision{"active": active}, active: active}
+	builder := &runtimeBuilderFake{}
+	manager := NewManager(repository, builder)
+	original := &Runtime{Revision: active}
+	manager.current.Store(original)
+
+	revalidated, err := manager.Validate(context.Background(), active.ID, active.Version, "trace-new", "audit-new")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if revalidated.State != identity.RevisionActive || revalidated.Version != 5 || manager.Current() == original || manager.Current().Revision.LastAuditID != "audit-new" {
+		t.Fatalf("active runtime was not safely revalidated: %#v", revalidated)
+	}
+}
diff --git a/apps/api/internal/store/identity_configurations.go b/apps/api/internal/store/identity_configurations.go
index 0c66665..ec52884 100644
--- a/apps/api/internal/store/identity_configurations.go
+++ b/apps/api/internal/store/identity_configurations.go
@@ -153,6 +153,18 @@ RETURNING `+identityRevisionColumns, id, expectedVersion, traceID, auditID))
 	return revision, err
 }
 
+func (s *Store) RevalidateActiveIdentityRevision(ctx context.Context, id string, expectedVersion int64, traceID, auditID string) (identity.Revision, error) {
+	revision, err := scanIdentityRevision(s.pool.QueryRow(ctx, `
+UPDATE gateway_identity_configuration_revisions SET validated_at=now(),last_error_category=NULL,
+last_trace_id=NULLIF($3,''),last_audit_id=NULLIF($4,''),version=version+1,updated_at=now()
+WHERE id=$1::uuid AND version=$2 AND state='active'
+RETURNING `+identityRevisionColumns, id, expectedVersion, traceID, auditID))
+	if errors.Is(err, pgx.ErrNoRows) {
+		return identity.Revision{}, identity.ErrRevisionConflict
+	}
+	return revision, err
+}
+
 func (s *Store) MarkIdentityRevisionFailed(ctx context.Context, id string, expectedVersion int64, category, traceID, auditID string) (identity.Revision, error) {
 	revision, err := scanIdentityRevision(s.pool.QueryRow(ctx, `
 UPDATE gateway_identity_configuration_revisions SET state='failed',last_error_category=NULLIF($3,''),