diff --git a/hosts/harmonica-sd/hardware-configuration.nix b/hosts/harmonica-sd/hardware-configuration.nix
index 7e65109..faa2820 100644
--- a/hosts/harmonica-sd/hardware-configuration.nix
+++ b/hosts/harmonica-sd/hardware-configuration.nix
@@ -61,7 +61,7 @@
   };
 
   boot = {
-    kernelPackages = pkgs.linuxPackages_rpi02w;
+    kernelPackages = pkgs.linuxKernel.packages.linux_rpi3;
 
     initrd.availableKernelModules = [
       "xhci_pci"
diff --git a/hosts/harmonica/hardware-configuration.nix b/hosts/harmonica/hardware-configuration.nix
index 27edb68..3d492ca 100644
--- a/hosts/harmonica/hardware-configuration.nix
+++ b/hosts/harmonica/hardware-configuration.nix
@@ -47,7 +47,7 @@
   };
 
   boot = {
-    kernelPackages = pkgs.linuxPackages_rpi02w;
+    kernelPackages = pkgs.linuxKernel.packages.linux_rpi3;
 
     initrd.availableKernelModules = [
       "xhci_pci"
diff --git a/modules/common-packages.nix b/modules/common-packages.nix
index 8734142..9e50b7a 100644
--- a/modules/common-packages.nix
+++ b/modules/common-packages.nix
@@ -46,7 +46,7 @@
     nix-inspect
     bat
     fd
-    du-dust
+    dust
     dysk
     gnupg
     attic-client
diff --git a/modules/fonts.nix b/modules/fonts.nix
index a8a96f6..07b27b2 100644
--- a/modules/fonts.nix
+++ b/modules/fonts.nix
@@ -18,7 +18,7 @@
       fonts.packages = with pkgs; [
         cascadia-code
         noto-fonts-cjk-sans
-        noto-fonts-emoji
+        noto-fonts-color-emoji
         liberation_ttf
         fira-code
         fira-code-symbols
diff --git a/modules/nix-settings.nix b/modules/nix-settings.nix
index 73abcb5..878979d 100644
--- a/modules/nix-settings.nix
+++ b/modules/nix-settings.nix
@@ -30,6 +30,7 @@
       "nvidia-settings"
       "cuda-merged"
     ];
+  nixpkgs.config.allowAliases = false;
 
   # enable nix flakes
   nix.settings.experimental-features = [
diff --git a/modules/secrets.nix b/modules/secrets.nix
index 91b0d08..f8a0843 100644
--- a/modules/secrets.nix
+++ b/modules/secrets.nix
@@ -20,7 +20,7 @@
   config = lib.mkMerge [
     (lib.mkIf config.myModules.enableSecrets {
       environment.systemPackages = [
-        inputs.agenix.packages.${pkgs.hostPlatform.system}.agenix
+        inputs.agenix.packages.${pkgs.stdenv.hostPlatform.system}.agenix
         pkgs.age
       ];