diff --git a/pkgs/development/ocaml-modules/ctypes/default.nix b/pkgs/development/ocaml-modules/ctypes/default.nix
index 43c7ddbb2904..e64310f6db8d 100644
--- a/pkgs/development/ocaml-modules/ctypes/default.nix
+++ b/pkgs/development/ocaml-modules/ctypes/default.nix
@@ -4,6 +4,8 @@ buildOcaml rec {
   name = "ctypes";
   version = "0.4.1";
 
+  minimumSupportedOcamlVersion = "4";
+
   src = fetchurl {
     url = "https://github.com/ocamllabs/ocaml-ctypes/archive/${version}.tar.gz";
     sha256 = "74564e049de5d3c0e76ea284c225cb658ac1a2b483345be1efb9be4b3c1702f5";