diff --git a/pkgs/development/ocaml-modules/sel/default.nix b/pkgs/development/ocaml-modules/sel/default.nix
index 506e8bb89e04..85c456bb6173 100644
--- a/pkgs/development/ocaml-modules/sel/default.nix
+++ b/pkgs/development/ocaml-modules/sel/default.nix
@@ -6,14 +6,14 @@
   buildDunePackage,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   pname = "sel";
   version = "0.8.0";
 
   minimalOCamlVersion = "4.07";
 
   src = fetchurl {
-    url = "https://github.com/gares/sel/releases/download/v${version}/sel-${version}.tbz";
+    url = "https://github.com/gares/sel/releases/download/v${finalAttrs.version}/sel-${finalAttrs.version}.tbz";
     hash = "sha256-jTAjWdaoioR5+G96qoOY+JXrJY00eF7y7WhGSiFwfqg=";
   };
 
@@ -31,4 +31,4 @@ buildDunePackage rec {
     license = lib.licenses.mit;
     maintainers = [ lib.maintainers.vbgl ];
   };
-}
+})