diff --git a/native-image-tests/build.sbt b/native-image-tests/build.sbt
index 1af47ce0..d26cd73a 100644
--- a/native-image-tests/build.sbt
+++ b/native-image-tests/build.sbt
@@ -2,7 +2,7 @@ name := "native-image-tests"
 
 version := "1.0"
 
-scalaVersion := s"2.13.12"
+scalaVersion := "2.13.12"
 
 resolvers += "Akka library repository".at("https://repo.akka.io/maven")
 
@@ -47,5 +47,6 @@ nativeImageVersion := "21.0.2"
 nativeImageOptions := Seq(
   "--no-fallback",
   "--verbose",
+  "--initialize-at-build-time=ch.qos.logback",
   "-Dakka.native-image.debug=true"
 )
diff --git a/native-image-tests/src/main/resources/application.conf b/native-image-tests/src/main/resources/application.conf
index f921292b..13a4f6d6 100644
--- a/native-image-tests/src/main/resources/application.conf
+++ b/native-image-tests/src/main/resources/application.conf
@@ -34,4 +34,7 @@ akka {
   cluster {
     downing-provider-class = "akka.cluster.sbr.SplitBrainResolverProvider"
   }
-}
\ No newline at end of file
+}
+
+# just to keep the class name out of graalvms sight
+pod-cost-class = "akka.rollingupdate.kubernetes.PodDeletionCost"
\ No newline at end of file
diff --git a/native-image-tests/src/main/resources/logback.xml b/native-image-tests/src/main/resources/logback.xml
index b1fe9ae9..7aff0586 100644
--- a/native-image-tests/src/main/resources/logback.xml
+++ b/native-image-tests/src/main/resources/logback.xml
@@ -7,14 +7,8 @@
         </encoder>
     </appender>
 
-    <appender name="ASYNC" class="ch.qos.logback.classic.AsyncAppender">
-        <queueSize>1024</queueSize>
-        <neverBlock>true</neverBlock>
-        <appender-ref ref="STDOUT" />
-    </appender>
-
     <root level="INFO">
-        <appender-ref ref="ASYNC"/>
+        <appender-ref ref="STDOUT"/>
     </root>
 
 </configuration>
diff --git a/native-image-tests/src/main/scala/com/lightbend/Main.scala b/native-image-tests/src/main/scala/com/lightbend/Main.scala
index 680ad2f7..637e5b82 100644
--- a/native-image-tests/src/main/scala/com/lightbend/Main.scala
+++ b/native-image-tests/src/main/scala/com/lightbend/Main.scala
@@ -1,16 +1,40 @@
 package com.lightbend
 
+import akka.actor.ExtendedActorSystem
+import akka.actor.ExtensionId
 import akka.actor.typed.ActorSystem
 import akka.actor.typed.Behavior
 import akka.actor.typed.scaladsl.Behaviors
 import akka.cluster.typed.Cluster
 import akka.cluster.typed.SelfUp
 import akka.cluster.typed.Subscribe
+import akka.coordination.lease.LeaseSettings
 import akka.management.scaladsl.AkkaManagement
 
 import scala.concurrent.duration.DurationInt
 
 object RootBehavior {
+
+  def checkK8Lease(system: ActorSystem[_]): Unit = {
+    // this throws if not all spray-json metadata in place
+    new akka.coordination.lease.kubernetes.internal.KubernetesJsonSupport {}
+
+    // we can't really set up the lease but it is expected to be constructed via config/reflection, so let's check access
+    // that native-image can't guess
+    val exensionNameClass = system.settings.config.getString("akka.coordination.lease.kubernetes.lease-class")
+    val clazz = system.dynamicAccess.getClassFor[akka.coordination.lease.scaladsl.Lease](exensionNameClass).get
+    // we cant really call it though, but would get a NoSuchMethod here if it can't be found
+    clazz.getConstructor(classOf[LeaseSettings], classOf[ExtendedActorSystem])
+
+  }
+
+  def checkK8RollingUpdate(system: ActorSystem[_]): Unit = {
+    // this throws if not all spray-json metadata in place
+    new akka.rollingupdate.kubernetes.KubernetesJsonSupport {}
+    val extensionClazzName = system.settings.config.getString("pod-cost-class")
+    system.dynamicAccess.getObjectFor[ExtensionId[_]](extensionClazzName).get
+  }
+
   def apply(): Behavior[AnyRef] = Behaviors.setup { context =>
     Behaviors.withTimers { timers =>
       // Note that some exceptions in the log from k8 api discovery is expected, see application.conf
@@ -18,8 +42,9 @@ object RootBehavior {
       timers.startSingleTimer("Timeout", 30.seconds)
       Cluster(context.system).subscriptions ! Subscribe(context.self, classOf[SelfUp])
 
-      // FIXME cover k8 lease
-      // FIXME cover rolling-update
+      // best effort coverage of k8 lease and rolling update without actually using them
+      checkK8RollingUpdate(context.system)
+      checkK8Lease(context.system)
 
       Behaviors.receiveMessagePartial {
         case SelfUp(_) =>