diff --git a/ansible/test/roles/prepare-kubectl/defaults/main.yml b/ansible/test/roles/prepare-kubectl/defaults/main.yml
index aeb0919..df32a1a 100644
--- a/ansible/test/roles/prepare-kubectl/defaults/main.yml
+++ b/ansible/test/roles/prepare-kubectl/defaults/main.yml
@@ -4,4 +4,4 @@
 # cases where it is used by verification tests of other roles).
 kubectl_install: false
 # Kubectl version.
-kubectl_version: 1.15.4
+kubectl_version: 1.15.11
diff --git a/ansible/test/roles/prepare-rke/defaults/main.yml b/ansible/test/roles/prepare-rke/defaults/main.yml
index 28ec779..59ea266 100644
--- a/ansible/test/roles/prepare-rke/defaults/main.yml
+++ b/ansible/test/roles/prepare-rke/defaults/main.yml
@@ -2,4 +2,4 @@
 #The rke version.
 rke_version: 0.3.0
 #The kubectl version.
-kubectl_version: 1.15.4
+kubectl_version: 1.15.11
diff --git a/build/data_lists/infra_bin_utils.list b/build/data_lists/infra_bin_utils.list
index 29051f0..a1d11e0 100644
--- a/build/data_lists/infra_bin_utils.list
+++ b/build/data_lists/infra_bin_utils.list
@@ -1,3 +1,3 @@
-https://storage.googleapis.com/kubernetes-release/release/v1.15.4/bin/linux/amd64/kubectl
+https://storage.googleapis.com/kubernetes-release/release/v1.15.11/bin/linux/amd64/kubectl
 https://storage.googleapis.com/kubernetes-helm/helm-v2.14.2-linux-amd64.tar.gz
 https://github.com/rancher/rke/releases/download/v0.3.0/rke_linux-amd64