diff --git a/java/google/registry/builddefs/zip_file.bzl b/java/google/registry/builddefs/zip_file.bzl
index dac5a8678..d265599bf 100644
--- a/java/google/registry/builddefs/zip_file.bzl
+++ b/java/google/registry/builddefs/zip_file.bzl
@@ -148,7 +148,11 @@ def _zip_file(ctx):
       'cd "${repo}"',
       'rm -rf "${tmp}"',
   ]
-  script = ctx.new_file(ctx.configuration.bin_dir, '%s.sh' % ctx.label.name)
+  if hasattr(ctx, 'bin_dir'):
+    script = ctx.new_file(ctx.bin_dir, '%s.sh' % ctx.label.name)
+  else:
+    # TODO(user): remove this once Bazel 4.0+ is required.
+    script = ctx.new_file(ctx.configuration.bin_dir, '%s.sh' % ctx.label.name)
   ctx.file_action(output=script, content='\n'.join(cmd), executable=True)
   inputs = [ctx.file._zipper]
   inputs += [dep.zip_file for dep in ctx.attr.deps]