diff --git a/hosts/aluminium/configuration.nix b/hosts/aluminium/configuration.nix
index 713fd3d..ced9cdd 100644
--- a/hosts/aluminium/configuration.nix
+++ b/hosts/aluminium/configuration.nix
@@ -11,7 +11,6 @@
   boot.kernelParams = [ "console=ttyS0,115200n8" ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/sda";
   boot.loader.grub.extraConfig = "
     serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1
diff --git a/hosts/astatine/configuration.nix b/hosts/astatine/configuration.nix
index f4e3906..325b0b3 100644
--- a/hosts/astatine/configuration.nix
+++ b/hosts/astatine/configuration.nix
@@ -14,7 +14,6 @@
 
   # Use the GRUB 2 boot loader.
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   # boot.loader.grub.efiSupport = true;
   # boot.loader.grub.efiInstallAsRemovable = true;
   # boot.loader.efi.efiSysMountPoint = "/boot/efi";
diff --git a/hosts/backup-4/configuration.nix b/hosts/backup-4/configuration.nix
index 6748f68..0e8481a 100644
--- a/hosts/backup-4/configuration.nix
+++ b/hosts/backup-4/configuration.nix
@@ -11,7 +11,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/vda";
 
   networking.hostName = "backup-4";
diff --git a/hosts/beryllium/configuration.nix b/hosts/beryllium/configuration.nix
index 09490c6..d053311 100644
--- a/hosts/beryllium/configuration.nix
+++ b/hosts/beryllium/configuration.nix
@@ -9,7 +9,6 @@
   boot.kernelParams = [ "console=ttyS0,115200n8" ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/sda";
   boot.loader.grub.extraConfig = "
     serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1
diff --git a/hosts/carbon/configuration.nix b/hosts/carbon/configuration.nix
index ede7072..4bb00d7 100644
--- a/hosts/carbon/configuration.nix
+++ b/hosts/carbon/configuration.nix
@@ -10,7 +10,6 @@
   boot.kernelParams = [ "console=ttyS0,115200n8" ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/sda";
   boot.loader.grub.extraConfig = "
     serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1
diff --git a/hosts/clerie-backup/configuration.nix b/hosts/clerie-backup/configuration.nix
index 98b767c..a28718f 100644
--- a/hosts/clerie-backup/configuration.nix
+++ b/hosts/clerie-backup/configuration.nix
@@ -10,7 +10,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/vda";
 
   boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
diff --git a/hosts/dn42-il-gw1/configuration.nix b/hosts/dn42-il-gw1/configuration.nix
index 8ade80b..360c949 100644
--- a/hosts/dn42-il-gw1/configuration.nix
+++ b/hosts/dn42-il-gw1/configuration.nix
@@ -9,7 +9,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/vda";
 
   networking.hostName = "dn42-il-gw1";
diff --git a/hosts/dn42-il-gw5/configuration.nix b/hosts/dn42-il-gw5/configuration.nix
index 1512f88..d70741e 100644
--- a/hosts/dn42-il-gw5/configuration.nix
+++ b/hosts/dn42-il-gw5/configuration.nix
@@ -9,7 +9,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/vda";
 
   networking.hostName = "dn42-il-gw5";
diff --git a/hosts/dn42-il-gw6/configuration.nix b/hosts/dn42-il-gw6/configuration.nix
index 274f33a..60eb067 100644
--- a/hosts/dn42-il-gw6/configuration.nix
+++ b/hosts/dn42-il-gw6/configuration.nix
@@ -9,7 +9,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/vda";
 
   networking.hostName = "dn42-il-gw6";
diff --git a/hosts/dn42-ildix-clerie/configuration.nix b/hosts/dn42-ildix-clerie/configuration.nix
index bca45c3..9e27816 100644
--- a/hosts/dn42-ildix-clerie/configuration.nix
+++ b/hosts/dn42-ildix-clerie/configuration.nix
@@ -8,7 +8,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/vda";
 
   networking.hostName = "dn42-ildix-clerie";
diff --git a/hosts/dn42-ildix-service/configuration.nix b/hosts/dn42-ildix-service/configuration.nix
index b1d1183..e3121d5 100644
--- a/hosts/dn42-ildix-service/configuration.nix
+++ b/hosts/dn42-ildix-service/configuration.nix
@@ -11,7 +11,6 @@
 
   # Use the GRUB 2 boot loader.
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   # boot.loader.grub.efiSupport = true;
   # boot.loader.grub.efiInstallAsRemovable = true;
   # boot.loader.efi.efiSysMountPoint = "/boot/efi";
diff --git a/hosts/gatekeeper/configuration.nix b/hosts/gatekeeper/configuration.nix
index 157be04..8135356 100644
--- a/hosts/gatekeeper/configuration.nix
+++ b/hosts/gatekeeper/configuration.nix
@@ -8,7 +8,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/sda";
 
   networking.hostName = "gatekeeper";
diff --git a/hosts/hydra-1/configuration.nix b/hosts/hydra-1/configuration.nix
index 46626f5..027f0d9 100644
--- a/hosts/hydra-1/configuration.nix
+++ b/hosts/hydra-1/configuration.nix
@@ -8,7 +8,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/vda";
   
   boot.binfmt.emulatedSystems = [
diff --git a/hosts/hydra-2/configuration.nix b/hosts/hydra-2/configuration.nix
index a362512..5397517 100644
--- a/hosts/hydra-2/configuration.nix
+++ b/hosts/hydra-2/configuration.nix
@@ -8,7 +8,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/vda";
 
   boot.binfmt.emulatedSystems = [
diff --git a/hosts/mail-2/configuration.nix b/hosts/mail-2/configuration.nix
index c3e6e56..a7ce61d 100644
--- a/hosts/mail-2/configuration.nix
+++ b/hosts/mail-2/configuration.nix
@@ -10,7 +10,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/sda";
 
   networking.hostName = "mail-2";
diff --git a/hosts/minecraft-2/configuration.nix b/hosts/minecraft-2/configuration.nix
index 611dc19..2500129 100644
--- a/hosts/minecraft-2/configuration.nix
+++ b/hosts/minecraft-2/configuration.nix
@@ -15,7 +15,6 @@ in {
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/sda";
 
   networking.hostName = "minecraft-2";
diff --git a/hosts/monitoring-3/configuration.nix b/hosts/monitoring-3/configuration.nix
index b6a89b0..5149f70 100644
--- a/hosts/monitoring-3/configuration.nix
+++ b/hosts/monitoring-3/configuration.nix
@@ -14,7 +14,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/sda";
 
   networking.hostName = "monitoring-3";
diff --git a/hosts/nonat/configuration.nix b/hosts/nonat/configuration.nix
index 8e048bc..b76b737 100644
--- a/hosts/nonat/configuration.nix
+++ b/hosts/nonat/configuration.nix
@@ -9,7 +9,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/vda";
 
   networking.hostName = "nonat";
diff --git a/hosts/osmium/configuration.nix b/hosts/osmium/configuration.nix
index f493457..1e1a05e 100644
--- a/hosts/osmium/configuration.nix
+++ b/hosts/osmium/configuration.nix
@@ -11,7 +11,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/vda";
 
   boot.binfmt.emulatedSystems = [
diff --git a/hosts/porter/configuration.nix b/hosts/porter/configuration.nix
index d74c7e9..b3603d2 100644
--- a/hosts/porter/configuration.nix
+++ b/hosts/porter/configuration.nix
@@ -8,7 +8,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/sda";
 
   networking.hostName = "porter";
diff --git a/hosts/storage-2/configuration.nix b/hosts/storage-2/configuration.nix
index 7631145..f067acb 100644
--- a/hosts/storage-2/configuration.nix
+++ b/hosts/storage-2/configuration.nix
@@ -12,7 +12,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/vda";
 
   networking.hostName = "storage-2";
diff --git a/hosts/web-2/configuration.nix b/hosts/web-2/configuration.nix
index 76b8817..65a3e45 100644
--- a/hosts/web-2/configuration.nix
+++ b/hosts/web-2/configuration.nix
@@ -29,7 +29,6 @@
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
   boot.loader.grub.device = "/dev/sda";
 
   networking.hostName = "web-2";