diff --git a/nixos/modules/services/web-apps/kimai.nix b/nixos/modules/services/web-apps/kimai.nix
index 23dfd1b1089e..91735b282fcc 100644
--- a/nixos/modules/services/web-apps/kimai.nix
+++ b/nixos/modules/services/web-apps/kimai.nix
@@ -238,6 +238,7 @@ in
       services.phpfpm.pools = mapAttrs' (
         hostName: cfg:
         (nameValuePair "kimai-${hostName}" {
+          phpPackage = cfg.package.php;
           inherit user;
           group = webserver.group;
           settings = {