diff --git a/nixos/hardware-configuration.nix b/nixos/hardware-configuration.nix
index a745282..5b0fc8f 100644
--- a/nixos/hardware-configuration.nix
+++ b/nixos/hardware-configuration.nix
@@ -24,6 +24,8 @@ in
   boot.initrd.luks =
     {
       devices =
+        # allow discards on all devices
+        builtins.mapAttrs (name: val: val // {allowDiscards = true;})
         {
           "system".device = "/dev/disk/by-uuid/85154131-b2a8-4ef5-9d74-47429cb267ef";
           "cryptswap".device = "/dev/disk/by-uuid/ac586df6-6332-4809-beb1-f51906a2adaa";