diff --git a/nixbld-etc-nixos/configuration.nix b/nixbld-etc-nixos/configuration.nix
index 9824883f..3690c6d0 100644
--- a/nixbld-etc-nixos/configuration.nix
+++ b/nixbld-etc-nixos/configuration.nix
@@ -945,6 +945,7 @@ in
     hostName = "files.m-labs.hk";
     https = true;
     enableBrokenCiphersForSSE = false;
+    maxUploadSize = "2G";
     config.adminpassFile = "/etc/nixos/secret/nextcloud_pass.txt";
   };