diff --git a/modules/k3s-airgap-images.nix b/modules/k3s-airgap-images.nix
index 80d8b52..ae8d250 100644
--- a/modules/k3s-airgap-images.nix
+++ b/modules/k3s-airgap-images.nix
@@ -9,15 +9,15 @@ stdenv.mkDerivation rec {
   in {
     x86_64-linux = fetchurl {
       url = "https://github.com/rancher/k3s/releases/download/v${version}/k3s-airgap-images-amd64.tar";
-      sha256 = "1fiq211vvsnxdzfx9ybb28yyyif08zls7bx3kl8xmv4hrf8xza4i";
+      sha256 = "sha256-6kQmlpNV+4cU1Kn5lyZhutXYK5qYdey0jubzYRRF3vA=";
     };
     aarch64-linux = fetchurl {
       url = "https://github.com/rancher/k3s/releases/download/v${version}/k3s-airgap-images-arm64.tar";
-      sha256 = "1xaggiw5h0zndgvdikg7babwd9903n9vabp1dkh53g8al812sfnd";
+      sha256 = "sha256-OlqqdAmBN+azT0kfjZ/Bd0CFbbW5hTg9/8T9U05N0zE=";
     };
     armv7l-linux = fetchurl {
       url = "https://github.com/rancher/k3s/releases/download/v${version}/k3s-airgap-images-arm.tar";
-      sha256 = "1v90wyvj47hz4nphdq7isfbl758yrzg4bx7c73ghmlgvr6p9cdzb";
+      sha256 = "sha256-j/ARBtHDnfRk/7BpOvavoHe7L5dmsCZe5+wuZ5t4V/k=";
     };
   }.${stdenv.hostPlatform.system} or throwError;
 
diff --git a/modules/testing.nix b/modules/testing.nix
index e247f8a..712bd38 100644
--- a/modules/testing.nix
+++ b/modules/testing.nix
@@ -192,11 +192,13 @@ let
         networking.primaryIPAddress = mkForce "192.168.1.1";
       };
 
-      testScript = ''
-        startAll;
+      skipLint = true;
 
-        $kube->waitForUnit('k3s.service');
-        $kube->waitUntilSucceeds("kubectl get node kube | grep -w Ready");
+      testScript = ''
+        start_all()
+
+        kube.wait_for_unit('k3s.service')
+        kube.wait_until_succeeds("kubectl get node kube | grep -w Ready")
 
         ${testScript}
       '';
diff --git a/tests/k8s/deployment-k3s.nix b/tests/k8s/deployment-k3s.nix
index 2cd6c78..738088d 100644
--- a/tests/k8s/deployment-k3s.nix
+++ b/tests/k8s/deployment-k3s.nix
@@ -32,11 +32,11 @@ in {
       services.kubernetes.kubelet.seedDockerImages = config.docker.export;
     };
     testScript = ''
-      $kube->waitUntilSucceeds("kubectl apply -f ${config.kubernetes.result}");
+      kube.wait_until_succeeds("kubectl apply -f ${config.kubernetes.result}")
 
-      $kube->succeed("kubectl get deployment | grep -i nginx");
-      $kube->waitUntilSucceeds("kubectl get deployment -o go-template nginx --template={{.status.readyReplicas}} | grep 10");
-      $kube->waitUntilSucceeds("curl http://nginx.default.svc.cluster.local | grep -i hello");
+      kube.succeed("kubectl get deployment | grep -i nginx")
+      kube.wait_until_succeeds("kubectl get deployment -o go-template nginx --template={{.status.readyReplicas}} | grep 10")
+      kube.wait_until_succeeds("curl http://nginx.default.svc.cluster.local | grep -i hello")
     '';
   };