diff --git a/nix/hosts/lavender/mqtt.nix b/nix/hosts/lavender/mqtt.nix
index 9ce7782..0990d47 100644
--- a/nix/hosts/lavender/mqtt.nix
+++ b/nix/hosts/lavender/mqtt.nix
@@ -24,7 +24,7 @@ let
     listener 1883 127.0.0.1
     listener 1883 ::1
 
-    plugin ${pkgs.mosquitto-with-timestamps.lib}/lib/mosquitto_message_timestamp.so
+    plugin ${cfg.package.lib}/lib/mosquitto_message_timestamp.so
   '';
 in
 {
@@ -42,7 +42,7 @@ in
   };
   services.mosquitto = {
     enable = true;
-    package = pkgs.mosquitto-with-timestamps;
+    package = mkForce pkgs.mosquitto-with-timestamps;
     persistence = true;
   };
 }
diff --git a/nix/modules/hardware/rpi.nix b/nix/modules/hardware/rpi.nix
index 7cbb588..505399e 100644
--- a/nix/modules/hardware/rpi.nix
+++ b/nix/modules/hardware/rpi.nix
@@ -1,4 +1,5 @@
 {
+  pkgs,
   lib,
   config,
   ...
@@ -12,9 +13,14 @@ let
   cfg = config.hardware.rpi;
 in
 {
-  options.hardware.rpi.enable = mkEnableOption "raspberry pi setup";
+  options.hardware.rpi.enable = mkEnableOption "raspberry pi (4) setup";
 
   config = mkIf cfg.enable {
+    # Technically this is deprecated, but I don't want to build linux on my pi
+    # Hopefully by the time it's removed they'll have figured out something that doesn't
+    # involve doing that
+    boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linuxKernel.kernels.linux_rpi4;
+
     nixpkgs.hostPlatform = "aarch64-linux";
     hardware.enableRedistributableFirmware = true;