diff --git a/README.md b/README.md
index d0f5ac2..1e8fc56 100644
--- a/README.md
+++ b/README.md
@@ -10,8 +10,6 @@ Requirements
 You need a recent vagrant installed and virtualbox. Get it at http://www.vagrantup.com/downloads.html
 and https://www.virtualbox.org/wiki/Downloads
 
-The plugin  vagrant-trigger is also required (see below for installing it).
-
 You also need to have root access via sudo so the script can add NAT rules.
 Currently Linux and Mac OS X hosts are supported.
 
@@ -22,8 +20,6 @@ Get it and use it:
 
     git clone https://github.com/multipath-tcp/mptcp-vagrant.git
     cd mptcp-vagrant
-    # only the first time:
-    vagrant plugin install vagrant-triggers
     vagrant up
 
 This will:
diff --git a/Vagrantfile b/Vagrantfile
index d15ce5d..cf9aa24 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -150,10 +150,10 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
    #######################################################################
 }   
 
-  config.trigger.after :up do 
-    run "./scripts/post_up.sh"
+  config.trigger.after :up do |trigger|
+    trigger.run = {path: "scripts/post_up.sh"}
   end
-  config.trigger.after :halt do 
-    run "./scripts/post_halt.sh"
+  config.trigger.after :halt do |trigger|
+    trigger.run = {path: "scripts/post_halt.sh"}
   end
 end