diff --git a/hosts/mu/hardware.nix b/hosts/mu/hardware.nix
index 0416610..abeb019 100644
--- a/hosts/mu/hardware.nix
+++ b/hosts/mu/hardware.nix
@@ -24,7 +24,7 @@
   fileSystems."/" = {
     device = "none";
     fsType = "tmpfs";
-    options = ["defaults" "size=4G" "mode=755"]; # mode=755 so only root can write to those files
+    options = ["defaults" "size=50%" "mode=755"]; # mode=755 so only root can write to those files
   };
   fileSystems."/boot" = {
     device = "/dev/disk/by-label/BOOT";
diff --git a/hosts/omega/hardware.nix b/hosts/omega/hardware.nix
index a3bc2b0..ae36f76 100644
--- a/hosts/omega/hardware.nix
+++ b/hosts/omega/hardware.nix
@@ -25,7 +25,7 @@
   fileSystems."/" = {
     device = "none";
     fsType = "tmpfs";
-    options = ["defaults" "size=4G" "mode=755"]; # mode=755 so only root can write to those files
+    options = ["defaults" "size=50%" "mode=755"]; # mode=755 so only root can write to those files
   };
   fileSystems."/boot" = {
     device = "/dev/disk/by-label/BOOT";
diff --git a/hosts/sigma/hardware.nix b/hosts/sigma/hardware.nix
index b183b98..5ece9b3 100644
--- a/hosts/sigma/hardware.nix
+++ b/hosts/sigma/hardware.nix
@@ -24,7 +24,7 @@
   fileSystems."/" = {
     device = "none";
     fsType = "tmpfs";
-    options = ["defaults" "size=4G" "mode=755"]; # mode=755 so only root can write to those files
+    options = ["defaults" "size=50%" "mode=755"]; # mode=755 so only root can write to those files
   };
   fileSystems."/boot" = {
     device = "/dev/disk/by-label/BOOT";
diff --git a/hosts/zeta/hardware.nix b/hosts/zeta/hardware.nix
index 1585e61..5a6ef3f 100644
--- a/hosts/zeta/hardware.nix
+++ b/hosts/zeta/hardware.nix
@@ -24,7 +24,7 @@
   fileSystems."/" = {
     device = "none";
     fsType = "tmpfs";
-    options = ["defaults" "size=4G" "mode=755"]; # mode=755 so only root can write to those files
+    options = ["defaults" "size=50%" "mode=755"]; # mode=755 so only root can write to those files
   };
   fileSystems."/boot" = {
     device = "/dev/disk/by-label/BOOT";