diff --git a/flake.lock b/flake.lock
index de98361..96bb6f8 100644
--- a/flake.lock
+++ b/flake.lock
@@ -33,11 +33,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1781152676,
-        "narHash": "sha256-RxWs5ND31KzTG7wvMM+PMfUjyNpmIEr999lqNARaM5o=",
+        "lastModified": 1792526520,
+        "narHash": "sha256-3hSJlv8mUVnZPMWK2+CM7a9O+nR6Z4mCh27NfLCmTPc=",
         "owner": "nix-community",
         "repo": "disko",
-        "rev": "ff8702b4de27f72b4c78573dfb89ec74e36abdf1",
+        "rev": "cedd626e11b635470fa6f9fdb8ad79b0075dd7f9",
         "type": "github"
       },
       "original": {
@@ -76,11 +76,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1790368160,
-        "narHash": "sha256-q6H6pTUzi1l1k0Hql9U0l7uTSPiv4o7ywQ/bhVFYIJg=",
+        "lastModified": 1793422169,
+        "narHash": "sha256-1/1YSNIhwfQ6Y02ag1xsZ7GkqhjLxyEHhmqcRa+uruI=",
         "owner": "nix-community",
         "repo": "emacs-overlay",
-        "rev": "cd274f2c485f50cf9a0c90f36b13a923fa0e344e",
+        "rev": "9000a9a091ffe641cbe91bf8156c4b2bde4ddab7",
         "type": "github"
       },
       "original": {
@@ -311,11 +311,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1790185690,
-        "narHash": "sha256-xJ+X4hBtOcAFGBOe5nAMyMUeF9foJBmIOu3NjBqBycU=",
+        "lastModified": 1793341285,
+        "narHash": "sha256-Y1CiZ4SoBUjLQyQM/pY+rS2dXD3CHLPstF0lmOc73D4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "4975466d324710c576dc11ad614684e6bd8cad8e",
+        "rev": "1c89083e451e891152365b799595cf7790a43325",
         "type": "github"
       },
       "original": {
@@ -375,11 +375,11 @@
     },
     "nixpkgs_5": {
       "locked": {
-        "lastModified": 1790218706,
-        "narHash": "sha256-6e4Na3z008XpdVyOXgfasXIn1aN+z8AXFG+jXdQSyuI=",
+        "lastModified": 1793294725,
+        "narHash": "sha256-loLMnbbS4KhmG2ln9EY6f0YMNCA273Yx02oWYQ9IMeE=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "c508844df6c28fa6dabc1b6af70f3ccbd65c5201",
+        "rev": "6f06d204d8f2d8761d9da78778745974a3216381",
         "type": "github"
       },
       "original": {
@@ -407,11 +407,11 @@
     },
     "nixpkgs_7": {
       "locked": {
-        "lastModified": 1790185690,
-        "narHash": "sha256-xJ+X4hBtOcAFGBOe5nAMyMUeF9foJBmIOu3NjBqBycU=",
+        "lastModified": 1793341285,
+        "narHash": "sha256-Y1CiZ4SoBUjLQyQM/pY+rS2dXD3CHLPstF0lmOc73D4=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "4975466d324710c576dc11ad614684e6bd8cad8e",
+        "rev": "1c89083e451e891152365b799595cf7790a43325",
         "type": "github"
       },
       "original": {
@@ -475,11 +475,11 @@
         "nixpkgs": "nixpkgs_7"
       },
       "locked": {
-        "lastModified": 1790373482,
-        "narHash": "sha256-YjZ8nL6rZjW8WC2AA+TrFFrrpYNg1JnipHnYS8p8gXU=",
+        "lastModified": 1793449685,
+        "narHash": "sha256-Yvr4OiUOaajuWf7XW6HnihF5TTJx+d1q+3/hKvt48UU=",
         "owner": "nix-community",
         "repo": "nur",
-        "rev": "e36059ae679d1e362c936794b5267a4c7f75e36b",
+        "rev": "bc6dffa21059edc8521e10898d446c6fc403f477",
         "type": "github"
       },
       "original": {
@@ -523,11 +523,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1790321428,
-        "narHash": "sha256-JQBGEZDY6up5yu0ehQeDDnjvsw7MP8d4AlaBd9RxZVI=",
+        "lastModified": 1793434469,
+        "narHash": "sha256-+sgVNI2c67di+XIeMaz5KSei4T65kX68s5Nl0E5Gzbc=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "84fb3c79e477d5e7ec4eff9c24dbc5d5c99b0fd1",
+        "rev": "6ecf534a7c16e7c969f26838fdd8c93597ae93f3",
         "type": "github"
       },
       "original": {
diff --git a/system/core.nix b/system/core.nix
index 4f78321..8188d3d 100644
--- a/system/core.nix
+++ b/system/core.nix
@@ -114,5 +114,16 @@
     };
 
     libinput.enable = true;
+
+    # let chromium connect to the keyboard (keychron) for configuration 
+    udev.packages = [
+      (pkgs.writeTextFile {
+        name = "keychron-udev-rules";
+        text = ''
+          KERNEL=="hidraw*", SUBSYSTEM=="hidraw", ATTRS{idVendor}=="3434", ATTRS{idProduct}=="052d", TAG+="uaccess"
+'';
+        destination = "/lib/udev/rules.d/70-keychron.rules";
+      })
+    ];
   };
 }