diff --git a/api/konfig/builtinpluginconsts/namereference.go b/api/konfig/builtinpluginconsts/namereference.go
index f93ec5ce7..c8862876b 100644
--- a/api/konfig/builtinpluginconsts/namereference.go
+++ b/api/konfig/builtinpluginconsts/namereference.go
@@ -255,6 +255,7 @@ nameReference:
   - path: spec/template/spec/containers/env/valueFrom/secretKeyRef/name
     kind: Service
     group: serving.knative.dev
+    version: v1
 
 - kind: Service
   version: v1