diff --git a/utils/pkgs/strongbox/default.nix b/utils/pkgs/strongbox/default.nix
index be2fecb..8816828 100644
--- a/utils/pkgs/strongbox/default.nix
+++ b/utils/pkgs/strongbox/default.nix
@@ -1,8 +1,10 @@
 { lib, stdenv, fetchurl, ... }:
+let
+  version = "7.0.0";
+in
 
 stdenv.mkDerivation {
   name = "strongbox";
-  version = "7.0.0";
 
   src = fetchurl {
     url = "https://github.com/ogri-la/strongbox/releases/download/${version}/strongbox";