diff --git a/pkgs/applications/networking/cluster/hetzner-kube/default.nix b/pkgs/applications/networking/cluster/hetzner-kube/default.nix
index 7409d71fe8f..d0afe6d2e43 100644
--- a/pkgs/applications/networking/cluster/hetzner-kube/default.nix
+++ b/pkgs/applications/networking/cluster/hetzner-kube/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildGoModule, fetchFromGitHub }:
+{ lib, buildGoModule, fetchFromGitHub, installShellFiles }:
 
 buildGoModule rec {
   pname = "hetzner-kube";
@@ -20,6 +20,17 @@ buildGoModule rec {
     -X github.com/xetys/hetzner-kube/cmd.version=${version}
   '';
 
+  nativeBuildInputs = [
+    installShellFiles
+  ];
+
+  postInstall = ''
+    $out/bin/hetzner-kube completion bash > hetzner-kube
+    $out/bin/hetzner-kube completion zsh > _hetzner-kube
+    installShellCompletion --zsh _hetzner-kube
+    installShellCompletion --bash hetzner-kube
+  '';
+
   meta = {
     description = "A CLI tool for provisioning Kubernetes clusters on Hetzner Cloud";
     homepage = "https://github.com/xetys/hetzner-kube";