diff --git a/nixos/tests/k3s/etcd.nix b/nixos/tests/k3s/etcd.nix
index c858dd4e0283..a44de1f6233f 100644
--- a/nixos/tests/k3s/etcd.nix
+++ b/nixos/tests/k3s/etcd.nix
@@ -50,6 +50,7 @@ import ../make-test-python.nix (
           services.k3s = {
             enable = true;
             role = "server";
+            package = k3s;
             extraFlags = [
               "--datastore-endpoint=\"http://192.168.1.1:2379\""
               "--disable coredns"