diff --git a/config.mk b/config.mk
index 5621e21..a173cec 100644
--- a/config.mk
+++ b/config.mk
@@ -4,7 +4,7 @@ root = ${top}/root
 arch = x86_64
 libcroot = ${root}/opt/cross/${arch}-linux-musl/${arch}-linux-musl
 nprocs = 4   # number of processes for building separate packages
-NPROC = 1    # number of processes for mk concurrency
+NPROC = 4    # number of processes for mk concurrency
 version = 0.0
 mirror = http://dl.2f30.org/morpheus-pkgs/${arch}/${version}
 CC = ${arch}-linux-musl-gcc