diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..85ecdb3
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,14 @@
+#! /bin/sh
+#
+# update.sh
+# Copyright (C) 2017 Fabian Ising <fabian@murgi.de>
+#
+# Distributed under terms of the Apache v2.0 license.
+#
+
+git pull
+
+git subtree pull --prefix=i3 i3 master --squash
+git subtree pull --prefix=tmux tmux master --squash
+git subtree pull --prefix=zsh zsh master --squash
+git subtree pull --prefix=vim vim master --squash