diff --git a/ci/flake-cron.nix b/ci/flake-cron.nix
index 69728e05..255f61a7 100644
--- a/ci/flake-cron.nix
+++ b/ci/flake-cron.nix
@@ -1,6 +1,9 @@
 { lib, channels, config, ... }:
 with lib; {
   name = "flake-update";
+
+  nixpkgs.args.localSystem = "x86_64-linux";
+
   ci = {
     version = "nix2.4";
     gh-actions = {
diff --git a/ci/nodes.nix b/ci/nodes.nix
index b7e3eb2b..0a0ab5bf 100644
--- a/ci/nodes.nix
+++ b/ci/nodes.nix
@@ -1,5 +1,8 @@
 { lib, config, channels, env, ... }: with lib; {
   name = "nodes";
+
+  nixpkgs.args.localSystem = "x86_64-linux";
+
   ci = {
     version = "nix2.4";
     gh-actions = {