diff --git a/lib/overrides.nix b/lib/overrides.nix
index 0c945f63..0d56bdeb 100644
--- a/lib/overrides.nix
+++ b/lib/overrides.nix
@@ -55,7 +55,7 @@ pkgs: let
         '';
       });
       rpds-py = prev.rpds-py.overridePythonAttrs (old: {
-        cargoDeps = pkgs.rustPlatform.fetchCargoTarball {
+        cargoDeps = pkgs.rustPlatform.fetchCargoVendor {
           inherit (old) src;
           name = "${old.pname}-${old.version}";
           hash = "sha256-VOmMNEdKHrPKJzs+D735Y52y47MubPwLlfkvB7Glh14=";
diff --git a/modules/kernels/elm/overrides.nix b/modules/kernels/elm/overrides.nix
index 8faf9899..6609664c 100644
--- a/modules/kernels/elm/overrides.nix
+++ b/modules/kernels/elm/overrides.nix
@@ -24,7 +24,7 @@ pkgs: let
       pypkgs-build-requirements)
     // {
       rpds-py = prev.rpds-py.overridePythonAttrs (old: {
-        cargoDeps = pkgs.rustPlatform.fetchCargoTarball {
+        cargoDeps = pkgs.rustPlatform.fetchCargoVendor {
           inherit (old) src;
           name = "${old.pname}-${old.version}";
           hash = "sha256-VOmMNEdKHrPKJzs+D735Y52y47MubPwLlfkvB7Glh14=";