diff --git a/.gitignore b/.gitignore
index 6d81922..c52bee4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,5 @@
 /.reference/
 /backend/.phpunit.cache/
 /.postgres/
+/result
+/result-*
diff --git a/flake.nix b/flake.nix
index 63c2445..866671b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,8 +18,12 @@
       system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
-        devPhp = pkgs.php;
-        packages = import ./nix/packages { inherit pkgs; };
+        devPhp = pkgs.php.buildEnv {
+          extraConfig = uploadLimits.phpOptions;
+        };
+        packages = import ./nix/packages {
+          inherit pkgs uploadLimits;
+        };
       in
       {
         inherit packages;
diff --git a/nix/nixos-module.nix b/nix/nixos-module.nix
index e7c3995..8bfb03a 100644
--- a/nix/nixos-module.nix
+++ b/nix/nixos-module.nix
@@ -13,6 +13,7 @@ let
   appDir = "${backendPackage}/share/php/rabbi-gerzi-backend";
   phpPackage = backendPackage.passthru.php;
   poolName = "rabbi-gerzi";
+  uploadLimits = import ./upload-limits.nix;
   storagePath = "${cfg.stateDir}/storage";
   cachePath = "${cfg.cacheDir}/bootstrap-cache";
   setupService = "rabbi-gerzi-setup";
@@ -239,6 +240,7 @@ in
     services.phpfpm.pools.${poolName} = {
       inherit (cfg) user group;
       inherit phpPackage;
+      phpOptions = uploadLimits.phpOptions;
       settings = {
         "catch_workers_output" = true;
         "clear_env" = "no";
@@ -316,6 +318,9 @@ in
           cfg.backend.nginx
           {
             root = "${appDir}/public";
+            extraConfig = ''
+              client_max_body_size ${uploadLimits.nginxClientMaxBodySize};
+            '';
             locations = {
               "/" = {
                 index = "index.php";
diff --git a/nix/packages/backend.nix b/nix/packages/backend.nix
index e9eac6f..02e732b 100644
--- a/nix/packages/backend.nix
+++ b/nix/packages/backend.nix
@@ -2,16 +2,19 @@
   lib,
   makeWrapper,
   php,
+  uploadLimits ? import ../upload-limits.nix,
 }:
 
 let
-  phpPackage = php.withExtensions (
-    { enabled, all }:
-    enabled
-    ++ [
-      all.pdo_pgsql
-    ]
-  );
+  phpPackage = php.buildEnv {
+    extensions =
+      { enabled, all }:
+      enabled
+      ++ [
+        all.pdo_pgsql
+      ];
+    extraConfig = uploadLimits.phpOptions;
+  };
 in
 phpPackage.buildComposerProject2 (finalAttrs: {
   pname = "rabbi-gerzi-backend";
diff --git a/nix/packages/default.nix b/nix/packages/default.nix
index 45b1d04..bbd3482 100644
--- a/nix/packages/default.nix
+++ b/nix/packages/default.nix
@@ -1,7 +1,12 @@
-{ pkgs }:
+{
+  pkgs,
+  uploadLimits ? import ../upload-limits.nix,
+}:
 
 rec {
-  backend = pkgs.callPackage ./backend.nix { };
+  backend = pkgs.callPackage ./backend.nix {
+    inherit uploadLimits;
+  };
   frontend = pkgs.callPackage ./frontend.nix { };
   default = frontend;
 }
diff --git a/nix/upload-limits.nix b/nix/upload-limits.nix
index 513945a..6699d3b 100644
--- a/nix/upload-limits.nix
+++ b/nix/upload-limits.nix
@@ -1,4 +1,8 @@
 {
   nginxClientMaxBodySize = "6m";
   phpUploadLimit = "6M";
+  phpOptions = ''
+    upload_max_filesize = 6M
+    post_max_size = 6M
+  '';
 }