diff --git a/nixos/modules/services/web-apps/engelsystem.nix b/nixos/modules/services/web-apps/engelsystem.nix
index f1d71f1744715..138e2f3f1b90b 100644
--- a/nixos/modules/services/web-apps/engelsystem.nix
+++ b/nixos/modules/services/web-apps/engelsystem.nix
@@ -104,6 +104,7 @@ in {
       '';
 
     services.phpfpm.pools.engelsystem = {
+      phpPackage = pkgs.php81;
       user = "engelsystem";
       settings = {
         "listen.owner" = config.services.nginx.user;