diff --git a/config.json b/config.json
index 7be0df7..3709b40 100644
--- a/config.json
+++ b/config.json
@@ -44,7 +44,7 @@
             "PREMIRRORS = ''",
             "BB_GENERATE_MIRROR_TARBALLS = '1'",
             "BB_NUMBER_THREADS = '16'",
-            "PARALLEL_MAKE = '-j 16'",
+            "PARALLEL_MAKE = '-j 16 -l 52'",
             "XZ_MEMLIMIT = '5%'",
             "XZ_THREADS = '8'",
             "BB_TASK_NICE_LEVEL = '5'",