diff --git a/system/default.nix b/system/default.nix
index 7e113bb3..c3466442 100644
--- a/system/default.nix
+++ b/system/default.nix
@@ -29,6 +29,7 @@
         "flakes"
       ];
       auto-optimise-store = true;
+      download-buffer-size = "2G";
       substituters = [ "https://nix.xenia.me.uk" ];
       trusted-public-keys = [ "nix.xenia.me.uk:tlgwOaG5KMLjQUk2YaErS8mAG69ZCr3PaHXZYi+Y5eI=" ];
     };