diff --git a/4.Postfix/0_setup.py b/4.Postfix/0_setup.py
index eecf9e1af7036106d94e9ab1eb10e253204f7c57..2d64317e93ea61bdd8062b113bfd2292cee7dd8d 100644
--- a/4.Postfix/0_setup.py
+++ b/4.Postfix/0_setup.py
@@ -15,7 +15,6 @@ def setup(interactive=True):
     # Install and configure postfix
     dir_path = utils.get_dir(__file__)
     cmds = [
-        'apt-get update',
         'DEBIAN_FRONTEND=noninteractive apt-get -y install postfix mailutils',
         'echo "Replacing /etc/postfix/main.cf"',
         dict(line='write', template='%s/main.cf' % dir_path, target='/etc/postfix/main.cf', params=(