diff --git a/pkgs/by-name/in/inko/package.nix b/pkgs/by-name/in/inko/package.nix
index 9e6110919dd9..3f4ce544f627 100644
--- a/pkgs/by-name/in/inko/package.nix
+++ b/pkgs/by-name/in/inko/package.nix
@@ -13,14 +13,14 @@
   nix-update-script,
 }:
 
-rustPlatform.buildRustPackage rec {
+rustPlatform.buildRustPackage (finalAttrs: {
   pname = "inko";
   version = "0.18.1";
 
   src = fetchFromGitHub {
     owner = "inko-lang";
     repo = "inko";
-    tag = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-jVfAfR02R2RaTtzFSBoLuq/wdPaaI/eochrZaRVdmHY=";
   };
 
@@ -72,4 +72,4 @@ rustPlatform.buildRustPackage rec {
     platforms = lib.platforms.unix;
     mainProgram = "inko";
   };
-}
+})