diff --git a/explorer/frontend/default.nix b/explorer/frontend/default.nix
index 8f5d075da2b..6deb5a06c89 100644
--- a/explorer/frontend/default.nix
+++ b/explorer/frontend/default.nix
@@ -62,6 +62,8 @@ let
     mkYarnPackage {
       name = "cardano-explorer-frontend";
       inherit src;
+      yarnLock = ./yarn.lock;
+      packageJSON = ./package.json;
       extraBuildInputs = [
         oldHaskellPackages.purescript-derive-lenses
         cardano-sl-explorer