diff --git a/pkgs/development/ocaml-modules/opti/default.nix b/pkgs/development/ocaml-modules/opti/default.nix
index 7b084e61688b..f6552d57683f 100644
--- a/pkgs/development/ocaml-modules/opti/default.nix
+++ b/pkgs/development/ocaml-modules/opti/default.nix
@@ -4,6 +4,8 @@ buildDunePackage rec {
   pname = "opti";
   version = "1.0.3";
 
+  minimumOCamlVersion = "4.02";
+
   src = fetchurl {
     url = "https://github.com/magnusjonsson/opti/releases/download/${version}/opti-${version}.tbz";
     sha256 = "ed9ba56dc06e9d2b1bf097964cc65ea37db787d4f239c13d0dd74693f5b50a1e";