--- a/src/doc2dash/docset_builder.cr	2024-04-20 10:45:32.000673168 +0300
+++ b/src/doc2dash/docset_builder.cr	2024-04-20 10:45:56.072895349 +0300
@@ -44,6 +44,7 @@
       real_dest = @html_dest.join(dest || source)
       Dir.mkdir_p(Path.new(real_dest).dirname)
       File.copy(original, real_dest)
+      File.chmod(real_dest, 0o600)
       dest || source
     end