diff --git a/package/libubox/Makefile b/package/libubox/Makefile
index bdfe8a58f1..0fae4cbef2 100644
--- a/package/libubox/Makefile
+++ b/package/libubox/Makefile
@@ -9,6 +9,7 @@ PKG_SOURCE_URL:=git://nbd.name/luci2/libubox.git
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
 PKG_SOURCE_VERSION:=0608d1299546d4af1facc271a090cb2abb8c6105
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
+PKG_MIRROR_MD5SUM:=6a08dfa2519a969d184e7bb5bb390620
 CMAKE_INSTALL:=1
 
 include $(INCLUDE_DIR)/package.mk