diff --git a/flake.nix b/flake.nix
index 1d7bca766..ffe86221f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,7 +7,12 @@
       system = "x86_64-linux";
       pkgs = import nixpkgs { inherit system; };
 
-      php = pkgs.php83;
+      php = pkgs.php83.buildEnv {
+        extraConfig = ''
+          upload_max_filesize = 20M;
+          post_max_size = 20M;
+        '';
+      };
       phpPackages = pkgs.php83Packages;
     in
     with pkgs;