diff --git a/pkgs/development/ocaml-modules/ssl/default.nix b/pkgs/development/ocaml-modules/ssl/default.nix
index ad75b4a3dac0..ef8ce098f3ce 100644
--- a/pkgs/development/ocaml-modules/ssl/default.nix
+++ b/pkgs/development/ocaml-modules/ssl/default.nix
@@ -13,7 +13,9 @@ stdenv.mkDerivation {
     sha256 = "0i0j89b10n3xmmawcq4qfwa42133pddw4x5nysmsnpd15srv5gp9";
   };
 
-  buildInputs = [which openssl ocaml findlib];
+  buildInputs = [which ocaml findlib];
+
+  propagatedBuildInputs = [openssl];
 
   dontAddPrefix = true;