diff --git a/nixos/boxes/bolty/bolty-boot.nix b/nixos/boxes/bolty/bolty-boot.nix
index 16026d5a..7fb161a1 100644
--- a/nixos/boxes/bolty/bolty-boot.nix
+++ b/nixos/boxes/bolty/bolty-boot.nix
@@ -19,7 +19,7 @@
   services.zfs.autoScrub.enable = true;
   services.zfs.trim.enable = true;
 
-  boot.kernelParams = ["zfs.zfs_arc_max=8589934592"];
+  boot.kernelParams = ["zfs.zfs_arc_max=17179869184"];
 
   boot.zfs.extraPools = ["data"];