diff --git a/23.Initialize_APT/0_setup.sh b/23.Initialize_APT/0_setup.sh
index d1353a6e3ac7be645a2a77a5c487b4ceff7416d0..167f611dadf4259383ffce99d591d10e983a9e52 100755
--- a/23.Initialize_APT/0_setup.sh
+++ b/23.Initialize_APT/0_setup.sh
@@ -19,7 +19,7 @@ fi
 # update
 apt-get update
 apt-get install -y aptitude apt-transport-https
-apt-get dist-upgrade -y
+#apt-get dist-upgrade -y
 
 # modify sources.list to use ubicast cache
 if ( ! grep ${APT_CACHE_HOST} /etc/apt/sources.list ); then