diff --git a/k8s-upgrade-pipeline.groovy b/k8s-upgrade-pipeline.groovy
index fe7d189..64a7d99 100644
--- a/k8s-upgrade-pipeline.groovy
+++ b/k8s-upgrade-pipeline.groovy
@@ -285,6 +285,13 @@
 
     stage("Rebooting ${target}") {
         debian.osReboot(pepperEnv, target)
+        /*
+            * Kubernetes controller manager will mark kubernetes node as NotReady
+            * only after 40 seconds of it's downtime.
+            * Let's wait for 60 sec to be sure that node will reach it's
+            * correct status.
+        */
+        sleep(60)
         common.retry(times, delay) {
             if(!isNodeReady(pepperEnv, target)) {
                 error("Node still not in Ready state...")