diff --git a/ada/services/udev.nix b/ada/services/udev.nix
new file mode 100644
index 0000000..eec7417
--- /dev/null
+++ b/ada/services/udev.nix
@@ -0,0 +1,14 @@
+{pkgs, ...}: {
+  services = {
+    udev = {
+      packages = [
+        pkgs.yubikey-personalization
+      ];
+
+      extraRules = ''
+        SUBSYSTEM=="cpu", ACTION=="add", ATTR{cpufreq/scaling_governor}="performance"
+        SUBSYSTEM=="cpu", ACTION=="add", ATTR{cpufreq/energy_performance_preference}="performance"
+      '';
+    };
+  };
+}