diff --git a/pkgs/tools/networking/unbound/default.nix b/pkgs/tools/networking/unbound/default.nix
index 2e31fadba377..249376abbb06 100644
--- a/pkgs/tools/networking/unbound/default.nix
+++ b/pkgs/tools/networking/unbound/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   version = "1.13.1";
 
   src = fetchurl {
-    url = "https://unbound.net/downloads/${pname}-${version}.tar.gz";
+    url = "https://nlnetlabs.nl/downloads/unbound/unbound-${version}.tar.gz";
     sha256 = "sha256-hQTZe4/FvYlzRcldEW4O4N34yP+ZWQqytL0TJ4yfULg=";
   };
 
diff --git a/pkgs/tools/networking/unbound/python.nix b/pkgs/tools/networking/unbound/python.nix
index 921254be2a7d..067f5d2b417b 100644
--- a/pkgs/tools/networking/unbound/python.nix
+++ b/pkgs/tools/networking/unbound/python.nix
@@ -1,16 +1,11 @@
-{ lib, stdenv, fetchurl, openssl, expat, libevent, swig, pythonPackages }:
+{ lib, stdenv, unbound, openssl, expat, libevent, swig, pythonPackages }:
 
 let
   inherit (pythonPackages) python;
 in
 stdenv.mkDerivation rec {
   pname = "pyunbound";
-  version = "1.13.2";
-
-  src = fetchurl {
-    url = "https://nlnetlabs.nl/downloads/unbound/unbound-${version}.tar.gz";
-    sha256 = "sha256-ChO1R/O5KgJrXr0EI/VMmR5XGAN/2fckRYF/agQOGoM=";
-  };
+  inherit (unbound) version src;
 
   nativeBuildInputs = [ swig ];