diff --git a/pkgs/nanos6/jemalloc.nix b/pkgs/nanos6/jemalloc.nix
index 0eb35197..76c26d33 100644
--- a/pkgs/nanos6/jemalloc.nix
+++ b/pkgs/nanos6/jemalloc.nix
@@ -5,6 +5,7 @@ jemalloc.overrideAttrs (old: {
     "--with-jemalloc-prefix=nanos6_je_"
     "--enable-stats"
   ];
+  enableParallelBuilding = true;
   hardeningDisable = [ "all" ];
   meta = old.meta // {
     description = old.meta.description + " (for Nanos6)";