diff --git a/pkgs/development/ocaml-modules/omd/default.nix b/pkgs/development/ocaml-modules/omd/default.nix
index cb0697188eb4..b4526e077c97 100644
--- a/pkgs/development/ocaml-modules/omd/default.nix
+++ b/pkgs/development/ocaml-modules/omd/default.nix
@@ -4,14 +4,14 @@
   fetchurl,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   pname = "omd";
   version = "1.3.2";
 
   minimalOCamlVersion = "4.03";
 
   src = fetchurl {
-    url = "https://github.com/ocaml/omd/releases/download/${version}/omd-${version}.tbz";
+    url = "https://github.com/ocaml/omd/releases/download/${finalAttrs.version}/omd-${finalAttrs.version}.tbz";
     sha256 = "sha256-YCPhZCYx8I9njrVyWCCHnte7Wj/+53fN7evCjB+F+ts=";
   };
 
@@ -26,4 +26,4 @@ buildDunePackage rec {
     maintainers = [ lib.maintainers.vbgl ];
     mainProgram = "omd";
   };
-}
+})