diff --git a/hosts/common/configs/system/nix/default.nix b/hosts/common/configs/system/nix/default.nix
index 4441c7f..2ed3143 100644
--- a/hosts/common/configs/system/nix/default.nix
+++ b/hosts/common/configs/system/nix/default.nix
@@ -23,6 +23,7 @@
         "nix-command"
         "flakes"
       ];
+      download-buffer-size = 524288000;
     };
 
     channel.enable = false;