diff --git a/flake.nix b/flake.nix
index 63ef18c..86f4866 100644
--- a/flake.nix
+++ b/flake.nix
@@ -37,7 +37,7 @@
       "https://cache.cything.io/central"
     ];
     extra-trusted-public-keys = [
-      "central:cuiJMi+5BFUGeBPNMNWiKO6dlVTOHbHizFY+t7UW12w="
+      "central:uWhjva6m6dhC2hqNisjn2hXGvdGBs19vPkA1dPEuwFg="
     ];
     builders-use-substitutes = true;
   };
diff --git a/hosts/chunk/attic.nix b/hosts/chunk/attic.nix
index e731c01..7c728be 100644
--- a/hosts/chunk/attic.nix
+++ b/hosts/chunk/attic.nix
@@ -19,14 +19,14 @@
       };
 
       garbage-collection = {
-        default-retention-period = "3 months";
+        default-retention-period = "1 minute";
       };
 
       chunking = {
         nar-size-threshold = 0; # disables chunking
-        min-size = 64 * 1024 * 1024;
-        avg-size = 128 * 1024 * 1024;
-        max-size = 256 * 1024 * 1024;
+        min-size = 0;
+        avg-size = 0;
+        max-size = 0;
       };
     };
   };
diff --git a/hosts/chunk/rclone.nix b/hosts/chunk/rclone.nix
index bd3098b..1083545 100644
--- a/hosts/chunk/rclone.nix
+++ b/hosts/chunk/rclone.nix
@@ -34,7 +34,7 @@
       ExecStartPre = "/usr/bin/env mkdir -p /mnt/attic";
       ExecStart = "${lib.getExe pkgs.rclone} mount --config ${
         config.sops.secrets."rclone/config".path
-      } --cache-dir /var/cache/rclone --transfers=32 --allow-other --cache-dir /var/cache/rclone --dir-cache-time 72h --vfs-cache-mode writes --vfs-cache-max-size 2G rsyncnet:attic /mnt/attic ";
+      } --cache-dir /var/cache/rclone --transfers=32 --allow-other rsyncnet:attic /mnt/attic ";
       ExecStop = "${lib.getExe' pkgs.fuse "fusermount"} -u /mnt/attic";
     };
   };
diff --git a/hosts/common.nix b/hosts/common.nix
index 64722ad..373f0d5 100644
--- a/hosts/common.nix
+++ b/hosts/common.nix
@@ -6,7 +6,7 @@
       auto-optimise-store = true;
       flake-registry = "";
       trusted-users = [ "root" "@wheel" ];
-      trusted-public-keys = [ "central:cuiJMi+5BFUGeBPNMNWiKO6dlVTOHbHizFY+t7UW12w=" ];
+      trusted-public-keys = [ "central:uWhjva6m6dhC2hqNisjn2hXGvdGBs19vPkA1dPEuwFg=" ];
       substituters = [ "https://cache.cything.io/central" ];
     };
     channel.enable = false;