diff --git a/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/scheduler/cluster/k8s/ExecutorPodsPollingSnapshotSource.scala b/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/scheduler/cluster/k8s/ExecutorPodsPollingSnapshotSource.scala
index 045c6288c1948..8cb5fd00c2888 100644
--- a/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/scheduler/cluster/k8s/ExecutorPodsPollingSnapshotSource.scala
+++ b/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/scheduler/cluster/k8s/ExecutorPodsPollingSnapshotSource.scala
@@ -24,6 +24,7 @@ import io.fabric8.kubernetes.client.KubernetesClient
 import scala.collection.JavaConverters._
 
 import org.apache.spark.SparkConf
+import org.apache.spark.annotation.{DeveloperApi, Since, Stable}
 import org.apache.spark.deploy.k8s.Config._
 import org.apache.spark.deploy.k8s.Constants._
 import org.apache.spark.internal.Logging
diff --git a/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/scheduler/cluster/k8s/ExecutorPodsWatchSnapshotSource.scala b/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/scheduler/cluster/k8s/ExecutorPodsWatchSnapshotSource.scala
index 7f2f6029d6dc2..1cec0ef90c9d0 100644
--- a/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/scheduler/cluster/k8s/ExecutorPodsWatchSnapshotSource.scala
+++ b/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/scheduler/cluster/k8s/ExecutorPodsWatchSnapshotSource.scala
@@ -22,6 +22,7 @@ import io.fabric8.kubernetes.api.model.Pod
 import io.fabric8.kubernetes.client.{KubernetesClient, Watcher, WatcherException}
 import io.fabric8.kubernetes.client.Watcher.Action
 
+import org.apache.spark.annotation.{DeveloperApi, Since, Stable}
 import org.apache.spark.deploy.k8s.Constants._
 import org.apache.spark.internal.Logging
 import org.apache.spark.util.Utils