diff --git a/pkgs/development/ocaml-modules/redis/default.nix b/pkgs/development/ocaml-modules/redis/default.nix
index e54e5b3e3cfb..86ee73743184 100644
--- a/pkgs/development/ocaml-modules/redis/default.nix
+++ b/pkgs/development/ocaml-modules/redis/default.nix
@@ -7,14 +7,14 @@
   uuidm,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   pname = "redis";
   version = "0.8";
 
   minimalOCamlVersion = "4.03";
 
   src = fetchurl {
-    url = "https://github.com/0xffea/ocaml-redis/releases/download/v${version}/redis-${version}.tbz";
+    url = "https://github.com/0xffea/ocaml-redis/releases/download/v${finalAttrs.version}/redis-${finalAttrs.version}.tbz";
     hash = "sha256-Cli30Elur3tL/0bWK6PBBy229TK4jsQnN/0oVQux01I=";
   };
 
@@ -31,4 +31,4 @@ buildDunePackage rec {
     license = lib.licenses.bsd3;
     homepage = "https://github.com/0xffea/ocaml-redis";
   };
-}
+})