diff --git a/pkgs/development/ocaml-modules/ocaml-result/default.nix b/pkgs/development/ocaml-modules/ocaml-result/default.nix
index 710f1ede3e78..a59f1b0e3b8e 100644
--- a/pkgs/development/ocaml-modules/ocaml-result/default.nix
+++ b/pkgs/development/ocaml-modules/ocaml-result/default.nix
@@ -4,12 +4,12 @@
   fetchurl,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   pname = "result";
   version = "1.5";
 
   src = fetchurl {
-    url = "https://github.com/janestreet/result/releases/download/${version}/result-${version}.tbz";
+    url = "https://github.com/janestreet/result/releases/download/${finalAttrs.version}/result-${finalAttrs.version}.tbz";
     sha256 = "0cpfp35fdwnv3p30a06wd0py3805qxmq3jmcynjc3x2qhlimwfkw";
   };
 
@@ -23,4 +23,4 @@ buildDunePackage rec {
     '';
     license = lib.licenses.bsd3;
   };
-}
+})