diff --git a/pkgs/by-name/bu/bulloak/package.nix b/pkgs/by-name/bu/bulloak/package.nix
index bbd25cc0ab8c..39bd57007466 100644
--- a/pkgs/by-name/bu/bulloak/package.nix
+++ b/pkgs/by-name/bu/bulloak/package.nix
@@ -46,7 +46,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
   doCheck = false;
 
   # provide the list of solc versions to the `svm-rs-builds` dependency
-  SVM_RELEASES_LIST_JSON =
+  env.SVM_RELEASES_LIST_JSON =
     solc-versions.${stdenv.hostPlatform.system}
       or (throw "Unsupported system: ${stdenv.hostPlatform.system}");