diff --git a/pkgs/by-name/sl/slumber/package.nix b/pkgs/by-name/sl/slumber/package.nix
index e3760ae1dd59..c9f0edbb47d3 100644
--- a/pkgs/by-name/sl/slumber/package.nix
+++ b/pkgs/by-name/sl/slumber/package.nix
@@ -4,14 +4,14 @@
   rustPlatform,
 }:
 
-rustPlatform.buildRustPackage rec {
+rustPlatform.buildRustPackage (finalAttrs: {
   pname = "slumber";
   version = "4.2.0";
 
   src = fetchFromGitHub {
     owner = "LucasPickering";
     repo = "slumber";
-    tag = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-wEQPyp0J7p2TuJwH/fQv5fhenUY3MNIq0oazFJAj9lM=";
   };
 
@@ -20,9 +20,9 @@ rustPlatform.buildRustPackage rec {
   meta = {
     description = "Terminal-based HTTP/REST client";
     homepage = "https://slumber.lucaspickering.me";
-    changelog = "https://github.com/LucasPickering/slumber/blob/v${version}/CHANGELOG.md";
+    changelog = "https://github.com/LucasPickering/slumber/blob/v${finalAttrs.version}/CHANGELOG.md";
     license = lib.licenses.mit;
     mainProgram = "slumber";
     maintainers = with lib.maintainers; [ javaes ];
   };
-}
+})