diff --git a/terraform/hetzner.tf b/terraform/hetzner.tf
index 9df275d..52b21a7 100644
--- a/terraform/hetzner.tf
+++ b/terraform/hetzner.tf
@@ -191,7 +191,10 @@ resource "hcloud_server" "server_k8s_test" {
       main_node_ip : "10.0.0.2"
       cluster_token : ""
     }))
-    packages_setup : base64encode(file("${path.module}/modules/k8s-cluster/templates/install-packages.sh"))
+    packages_setup : base64encode(templatefile("${path.module}/templates/install-packages.sh", {
+      refresh_day : "fri"
+      refresh_hour : format("%02d", 0)
+    }))
     firewall_setup : base64encode(templatefile("${path.module}/modules/k8s-cluster/templates/firewall-setup.sh", {
       node_ip : "10.0.0.2"
     }))
diff --git a/terraform/modules/k8s-cluster/manager-node.tf b/terraform/modules/k8s-cluster/manager-node.tf
index 25fe87c..5e11887 100644
--- a/terraform/modules/k8s-cluster/manager-node.tf
+++ b/terraform/modules/k8s-cluster/manager-node.tf
@@ -93,7 +93,10 @@ resource "hcloud_server" "manager" {
       api_server_ip : var.create_loadbalancer ? hcloud_load_balancer.kubernetes[0].ipv4 : hcloud_primary_ip.ipv4_manager_address[0].ip_address
       cluster_token : random_id.cluster_token.hex
     }))
-    packages_setup : base64encode(file("${path.module}/templates/install-packages.sh"))
+    packages_setup : base64encode(templatefile("${path.module}/templates/install-packages.sh", {
+      refresh_day : "fri"
+      refresh_hour : format("%02d", count.index)
+    }))
     firewall_setup : base64encode(templatefile("${path.module}/templates/firewall-setup.sh", {
       node_ip : var.private_node_ips[count.index]
     }))
diff --git a/terraform/modules/k8s-cluster/templates/install-packages.sh b/terraform/modules/k8s-cluster/templates/install-packages.sh
index 4221598..3e02ecf 100644
--- a/terraform/modules/k8s-cluster/templates/install-packages.sh
+++ b/terraform/modules/k8s-cluster/templates/install-packages.sh
@@ -6,4 +6,5 @@ apt-get -y install snapd
 
 curl https://packages.hetzner.com/hcloud/deb/hc-utils_0.0.4-1_all.deb -o /run/tmpfiles.d/hc-utils_0.0.4-1_all.deb -s
 apt-get -y install /run/tmpfiles.d/hc-utils_0.0.4-1_all.deb
-snap install kubectl --classic
\ No newline at end of file
+snap install kubectl --classic
+snap set system refresh.timer=${refresh_day},${refresh_hour}:00
\ No newline at end of file
diff --git a/terraform/modules/k8s-cluster/worker-node.tf b/terraform/modules/k8s-cluster/worker-node.tf
index be2b5c2..083b8c1 100644
--- a/terraform/modules/k8s-cluster/worker-node.tf
+++ b/terraform/modules/k8s-cluster/worker-node.tf
@@ -72,7 +72,10 @@ resource "hcloud_server" "worker" {
       api_server_ip : var.create_loadbalancer ? hcloud_load_balancer.kubernetes[0].ipv4 : hcloud_server.manager[0].ipv4_address
       cluster_token : random_id.cluster_token.hex
     }))
-    packages_setup : base64encode(file("${path.module}/templates/install-packages.sh"))
+    packages_setup : base64encode(templatefile("${path.module}/templates/install-packages.sh", {
+      refresh_day : "sat"
+      refresh_hour : format("%02d", count.index)
+    }))
     firewall_setup : base64encode(templatefile("${path.module}/templates/firewall-setup.sh", {
       node_ip : var.private_node_ips[count.index]
     }))