diff --git a/scripts/build-all-machines b/scripts/build-all-machines
index 091fb68..c3c2b88 100755
--- a/scripts/build-all-machines
+++ b/scripts/build-all-machines
@@ -17,7 +17,7 @@ for host in "${hosts[@]}"; do
     fi
     echo $host
     nixos-rebuild build --flake "$DEVENV_ROOT#${host}"
-    attic push prod "$DEVENV_ROOT"/result
+    attic push -j 2 prod "$DEVENV_ROOT"/result
     rm -f "$DEVENV_ROOT"/result
     echo
     echo