diff --git a/build.sh b/build.sh
index ee9953fefe23d92987629d7fc56bc954e0c99647..cc1f86f650cd734b59818b1f365339c734ae0027 100755
--- a/build.sh
+++ b/build.sh
@@ -3,4 +3,4 @@
 export CROSS_COMPILE=aarch64-linux-gnu-
 export ARCH=arm
 
-make flash.bin
+make -j$(nproc) flash.bin