diff --git a/mkrootfs b/mkrootfs
index e971bd8..87fb8cf 100755
--- a/mkrootfs
+++ b/mkrootfs
@@ -61,6 +61,9 @@ sudo pacstrap \
     ./rootfs \
     base
 
+msg "Set default mirror to https://riscv.mirror.pkgbuild.com"
+sudo sed -E -i 's|#(Server = https://riscv\.mirror\.pkgbuild\.com/repo/\$repo)|\1|' ./rootfs/etc/pacman.d/mirrorlist
+
 msg "Clean up pacman package cache..."
 yes y | sudo pacman \
     --sysroot ./rootfs \