do an extra apt-get update

diff --git a/input/howto/upgrade-to-stretch.mdwn b/input/howto/upgrade-to-stretch.mdwn
index a5fd2c1..e93ec60 100644 (file)
--- a/input/howto/upgrade-to-stretch.mdwn
+++ b/input/howto/upgrade-to-stretch.mdwn
@@ -49,6 +49,7 @@ purge removed packages
 
 more clean ups:
 
+       apt-get update &&
        /usr/lib/nagios/plugins/dsa-check-packages | tr -d ,
 
        (apt-get purge them)