diff --git a/hosts/nachtigall/configuration.nix b/hosts/nachtigall/configuration.nix
index f49be986..69b191c3 100644
--- a/hosts/nachtigall/configuration.nix
+++ b/hosts/nachtigall/configuration.nix
@@ -82,7 +82,6 @@
     owner = "matrix-synapse";
   };
 
-
   pub-solar-os.matrix-synapse = {
     enable = true;
     sliding-sync.enable = true;
diff --git a/hosts/underground/configuration.nix b/hosts/underground/configuration.nix
index b53f5dd6..131cb163 100644
--- a/hosts/underground/configuration.nix
+++ b/hosts/underground/configuration.nix
@@ -79,10 +79,16 @@
             { name = "oauth"; }
             { name = "compat"; }
             { name = "graphql"; }
-            { name = "assets"; path = "${config.services.matrix-authentication-service.package}/share/matrix-authentication-service/assets"; }
+            {
+              name = "assets";
+              path = "${config.services.matrix-authentication-service.package}/share/matrix-authentication-service/assets";
+            }
           ];
           binds = [
-            { host = "0.0.0.0"; port = 8090; }
+            {
+              host = "0.0.0.0";
+              port = 8090;
+            }
           ];
           proxy_protocol = false;
         }
@@ -92,7 +98,10 @@
             { name = "health"; }
           ];
           binds = [
-            { host = "0.0.0.0"; port = 8081; }
+            {
+              host = "0.0.0.0";
+              port = 8081;
+            }
           ];
           proxy_protocol = false;
         }
diff --git a/hosts/underground/hardware-configuration.nix b/hosts/underground/hardware-configuration.nix
index e4738a1b..28ab939e 100644
--- a/hosts/underground/hardware-configuration.nix
+++ b/hosts/underground/hardware-configuration.nix
@@ -1,14 +1,27 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
 
 {
-  imports =
-    [ (modulesPath + "/profiles/qemu-guest.nix")
-    ];
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
 
-  boot.initrd.availableKernelModules = [ "ahci" "xhci_pci" "virtio_pci" "virtio_scsi" "sd_mod" "sr_mod" ];
+  boot.initrd.availableKernelModules = [
+    "ahci"
+    "xhci_pci"
+    "virtio_pci"
+    "virtio_scsi"
+    "sd_mod"
+    "sr_mod"
+  ];
   boot.kernelModules = [ "kvm-intel" ];
   boot.extraModulePackages = [ ];
 
@@ -16,19 +29,19 @@
     device = "/dev/disk/by-label/cryptroot";
   };
 
-  fileSystems."/" =
-    { device = "/dev/disk/by-label/root";
-      fsType = "ext4";
-    };
+  fileSystems."/" = {
+    device = "/dev/disk/by-label/root";
+    fsType = "ext4";
+  };
 
-  fileSystems."/boot" =
-    { device = "/dev/disk/by-label/boot";
-      fsType = "ext4";
-    };
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-label/boot";
+    fsType = "ext4";
+  };
 
-  swapDevices =
-    [ { device = "/dev/disk/by-label/swap"; }
-    ];
+  swapDevices = [
+    { device = "/dev/disk/by-label/swap"; }
+  ];
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
 }
diff --git a/hosts/underground/networking.nix b/hosts/underground/networking.nix
index 3085c7bc..0f08a7e5 100644
--- a/hosts/underground/networking.nix
+++ b/hosts/underground/networking.nix
@@ -13,11 +13,17 @@
       address = "80.244.242.1";
       interface = "enp1s0";
     };
-    nameservers = ["95.129.51.51" "80.244.244.244"];
+    nameservers = [
+      "95.129.51.51"
+      "80.244.244.244"
+    ];
     interfaces.enp1s0 = {
       useDHCP = false;
       ipv4.addresses = [
-        { address = "80.244.242.3"; prefixLength = 29; }
+        {
+          address = "80.244.242.3";
+          prefixLength = 29;
+        }
       ];
     };
   };
diff --git a/modules/matrix/default.nix b/modules/matrix/default.nix
index c0bee63c..1d955979 100644
--- a/modules/matrix/default.nix
+++ b/modules/matrix/default.nix
@@ -16,13 +16,13 @@ in
     app-service-config-files = lib.mkOption {
       description = "List of app service config files";
       type = lib.types.listOf lib.types.str;
-      default = [];
+      default = [ ];
     };
 
     extra-config-files = lib.mkOption {
       description = "List of extra synapse config files";
       type = lib.types.listOf lib.types.str;
-      default = [];
+      default = [ ];
     };
 
     signing_key_path = lib.mkOption {
diff --git a/modules/nginx-matrix/element-client-config.nix b/modules/nginx-matrix/element-client-config.nix
index 617d3bc3..80fed558 100644
--- a/modules/nginx-matrix/element-client-config.nix
+++ b/modules/nginx-matrix/element-client-config.nix
@@ -1,4 +1,9 @@
-{ config, pkgs, lib, ... }:
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
 {
   default_server_config = {
     "m.homeserver" = {
diff --git a/secrets/secrets.nix b/secrets/secrets.nix
index 402fc79d..7165ba69 100644
--- a/secrets/secrets.nix
+++ b/secrets/secrets.nix
@@ -70,7 +70,8 @@ in
   "nachtigall-matrix-synapse-sliding-sync-secret.age".publicKeys = nachtigallKeys ++ adminKeys;
 
   "underground-matrix-synapse-secret-config.yaml.age".publicKeys = undergroundKeys ++ adminKeys;
-  "underground-matrix-authentication-service-secret-config.yml.age".publicKeys = undergroundKeys ++ adminKeys;
+  "underground-matrix-authentication-service-secret-config.yml.age".publicKeys =
+    undergroundKeys ++ adminKeys;
 
   "nextcloud-secrets.age".publicKeys = nachtigallKeys ++ adminKeys;
   "nextcloud-admin-pass.age".publicKeys = nachtigallKeys ++ adminKeys;