diff --git a/pkgs/build-support/dart/fetch-dart-deps/default.nix b/pkgs/build-support/dart/fetch-dart-deps/default.nix
index 4f32365f857f..fd3594df9950 100644
--- a/pkgs/build-support/dart/fetch-dart-deps/default.nix
+++ b/pkgs/build-support/dart/fetch-dart-deps/default.nix
@@ -207,6 +207,7 @@ let
     substitutions = { inherit gitSourceWrapper deps; };
     propagatedBuildInputs = [ dart git ];
     passthru = {
+      inherit deps;
       files = deps.outPath;
       depsListFile = depsListDrv.outPath;
     };