diff --git a/pkgs/development/ocaml-modules/mirage-crypto/default.nix b/pkgs/development/ocaml-modules/mirage-crypto/default.nix
index 9a774afcedde..ddfd916532f7 100644
--- a/pkgs/development/ocaml-modules/mirage-crypto/default.nix
+++ b/pkgs/development/ocaml-modules/mirage-crypto/default.nix
@@ -10,14 +10,14 @@
   ocaml-freestanding,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   minimalOCamlVersion = "4.13";
 
   pname = "mirage-crypto";
   version = "2.0.2";
 
   src = fetchurl {
-    url = "https://github.com/mirage/mirage-crypto/releases/download/v${version}/mirage-crypto-${version}.tbz";
+    url = "https://github.com/mirage/mirage-crypto/releases/download/v${finalAttrs.version}/mirage-crypto-${finalAttrs.version}.tbz";
     hash = "sha256-c5qdOfNAJ/vJNVf4fFysQZClK92t/3LyEvqoA9YhWHQ=";
   };
 
@@ -38,7 +38,7 @@ buildDunePackage rec {
   meta = {
     homepage = "https://github.com/mirage/mirage-crypto";
     description = "Simple symmetric cryptography for the modern age";
-    changelog = "https://raw.githubusercontent.com/mirage/mirage-crypto/refs/tags/v${version}/CHANGES.md";
+    changelog = "https://raw.githubusercontent.com/mirage/mirage-crypto/refs/tags/v${finalAttrs.version}/CHANGES.md";
     license = with lib.licenses; [
       isc # default license
       bsd2 # mirage-crypto-rng-mirage
@@ -49,4 +49,4 @@ buildDunePackage rec {
       momeemt
     ];
   };
-}
+})