diff --git a/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/Constants.scala b/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/Constants.scala
index 385734c557a38..ead3188aa6494 100644
--- a/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/Constants.scala
+++ b/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/Constants.scala
@@ -16,7 +16,16 @@
  */
 package org.apache.spark.deploy.k8s
 
-private[spark] object Constants {
+import org.apache.spark.annotation.{DeveloperApi, Stable}
+
+/**
+ * :: DeveloperApi ::
+ *
+ * This is used in both K8s module and Spark K8s Operator.
+ */
+@Stable
+@DeveloperApi
+object Constants {
 
   // Labels
   val SPARK_VERSION_LABEL = "spark-version"