diff --git a/nixos/kalle-pc/configuration.nix b/nixos/kalle-pc/configuration.nix
index 61ece76..0a1749b 100644
--- a/nixos/kalle-pc/configuration.nix
+++ b/nixos/kalle-pc/configuration.nix
@@ -79,7 +79,7 @@
   users.users.kalle = {
     isNormalUser = true;
     group = "kalle";
-    extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
+    extraGroups = [ "wheel" "dialout" ]; # Enable ‘sudo’ for the user.
   };
 
   users.groups.kalle.gid = 1000;