diff --git a/pkgs/development/ocaml-modules/nocrypto/default.nix b/pkgs/development/ocaml-modules/nocrypto/default.nix
index bed872ed08dd..833da3bb67c2 100644
--- a/pkgs/development/ocaml-modules/nocrypto/default.nix
+++ b/pkgs/development/ocaml-modules/nocrypto/default.nix
@@ -52,8 +52,8 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ ocaml findlib ocamlbuild cc-wrapper ];
-  buildInputs = [ ocamlbuild findlib topkg cpuid ocb-stubblr ppx_deriving ];
-  propagatedBuildInputs = [ cstruct ppx_sexp_conv sexplib zarith ] ++ optional withLwt cstruct-lwt;
+  buildInputs = [ ocamlbuild findlib topkg cpuid ocb-stubblr ];
+  propagatedBuildInputs = [ cstruct ppx_deriving ppx_sexp_conv sexplib zarith ] ++ optional withLwt cstruct-lwt;
 
   buildPhase = "${topkg.buildPhase} --with-lwt ${boolToString withLwt}";
   inherit (topkg) installPhase;