diff --git a/services/baremetal-builder/default.nix b/services/baremetal-builder/default.nix
index 0b9de91..fd9075a 100644
--- a/services/baremetal-builder/default.nix
+++ b/services/baremetal-builder/default.nix
@@ -164,8 +164,8 @@ in
       script = ''
         while : ; do
           percent_filled=$(($(stat -f --format="100-(100*%a/%b)" /mnt)))
-          if [ "$percent_filled" -gt "54" ]; then
-            ${config.nix.package.out}/bin/nix-store --gc --max-freed 50G --store /mnt
+          if [ "$percent_filled" -gt "85" ]; then
+            ${config.nix.package.out}/bin/nix-store --gc --max-freed 80G --store /mnt
           else
             break
           fi