diff --git a/hosts/backwards/modules/boot/default.nix b/hosts/backwards/modules/boot/default.nix
index 1687cc2..3098e8a 100644
--- a/hosts/backwards/modules/boot/default.nix
+++ b/hosts/backwards/modules/boot/default.nix
@@ -30,6 +30,8 @@ in
     };
 
     boot = {
+      tmp.cleanOnBoot = true;
+
       loader = {
         systemd-boot = {
           enable = true;
diff --git a/hosts/manatee/modules/boot/default.nix b/hosts/manatee/modules/boot/default.nix
index 5db298a..9becb34 100644
--- a/hosts/manatee/modules/boot/default.nix
+++ b/hosts/manatee/modules/boot/default.nix
@@ -30,6 +30,8 @@ in
     };
 
     boot = {
+      tmp.cleanOnBoot = true;
+
       loader = {
         systemd-boot = {
           enable = true;
diff --git a/hosts/tadpole/modules/boot/default.nix b/hosts/tadpole/modules/boot/default.nix
index 90be4a5..202e011 100644
--- a/hosts/tadpole/modules/boot/default.nix
+++ b/hosts/tadpole/modules/boot/default.nix
@@ -30,6 +30,8 @@ in
     };
 
     boot = {
+      tmp.cleanOnBoot = true;
+
       loader = {
         grub = {
           enable = true;