diff --git a/modules/cli/default.nix b/modules/cli/default.nix
index 073ba9d..76e9bce 100644
--- a/modules/cli/default.nix
+++ b/modules/cli/default.nix
@@ -82,6 +82,7 @@
 
       # utility
       cht-sh
+      arduino
       nixpkgs-review
       comma
       nix-index
diff --git a/modules/default.nix b/modules/default.nix
index 43aef8c..831063c 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -17,8 +17,12 @@
   users.users.moritz = {
     isNormalUser = true;
     home = "/home/moritz";
-    extraGroups =
-      [ "wheel" "networkmanager" "video" ]; # Enable ‘sudo’ for the user.
+    extraGroups = [
+      "wheel"
+      "networkmanager"
+      "video"
+      "dialout"
+    ]; # Enable ‘sudo’ for the user.
     initialPassword = "password"; # CHANGE ME PLEASE
   };