diff --git a/util/mirror-tarballs b/util/mirror-tarballs
index 6ce1b63..d86b5bb 100755
--- a/util/mirror-tarballs
+++ b/util/mirror-tarballs
@@ -646,7 +646,7 @@ cd .. || exit 1
 
 #################################
 
-ver=2.1.0.5
+ver=2.1.0.6rc1
 $root/util/get-tarball "https://github.com/openresty/lua-cjson/archive/$ver.tar.gz" -O "lua-cjson-$ver.tar.gz" || exit 1
 tar -xzf lua-cjson-$ver.tar.gz || exit 1
 #cd lua-cjson-$ver || exit 1