diff --git a/pkgs/tools/networking/unbound/python.nix b/pkgs/tools/networking/unbound/python.nix
index 067f5d2b417b..94f2374d904d 100644
--- a/pkgs/tools/networking/unbound/python.nix
+++ b/pkgs/tools/networking/unbound/python.nix
@@ -6,6 +6,7 @@ in
 stdenv.mkDerivation rec {
   pname = "pyunbound";
   inherit (unbound) version src;
+  patches = unbound.patches or null;
 
   nativeBuildInputs = [ swig ];