diff --git a/README.md b/README.md
index 63d9698..bcc1923 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,17 @@ Best practise is to leave systemwide file untouched, by default it is commented
 # cache dir where buildpkg or buildiso cache packages
 # cache_dir=/var/cache/manjaro-tools
 
+##########################################
+################ buildtree ###############
+##########################################
+
+# manjaro package tree
+# repo_tree=('core' 'extra' 'community' 'multilib' 'openrc')
+
+# host_tree=https://github.com/manjaro
+
+# host_tree_abs=https://projects.archlinux.org/git/svntogit/packages
+
 ##########################################
 ################ buildpkg ################
 ##########################################
@@ -321,3 +332,25 @@ Examples
 /etc/manjaro-tools/sets/pkg/lxqt-0.8.set
 /etc/manjaro-tools/sets/iso/manjaro-0.9.0.set
 ~~~
+
+5. buildtree
+
+builtree is a little tools to sync arch abs and manjaro packages git repos.
+
+####Arguments
+
+~~~
+$ buildtree -h
+Usage: buildtree [options]
+    -s            Sync manjaro tree
+    -a            Sync arch abs
+    -c            Clean package tree
+    -q            Query settings
+    -h            This help
+~~~
+
+* sync arch and manjaro trees
+
+~~~
+buildtree -as
+~~~