diff --git a/pkgs/development/ocaml-modules/kafka/default.nix b/pkgs/development/ocaml-modules/kafka/default.nix
index 383e4db25dae..595381ca2873 100644
--- a/pkgs/development/ocaml-modules/kafka/default.nix
+++ b/pkgs/development/ocaml-modules/kafka/default.nix
@@ -1,11 +1,15 @@
 {
   lib,
   fetchurl,
+  ocaml,
   buildDunePackage,
   rdkafka,
   zlib,
 }:
 
+lib.throwIf (lib.versionAtLeast ocaml.version "5.0")
+  "kafka is not available for OCaml ${ocaml.version}"
+
 buildDunePackage rec {
   pname = "kafka";
   version = "0.5";