From d5ceda6da72842cfde202d966a66be1429fe458f Mon Sep 17 00:00:00 2001
From: David Jelic <david@uxpassion.com>
Date: Tue, 10 Feb 2015 11:47:20 +0100
Subject: [PATCH] handle upgrade in debian/preinst script

---
 debian/preinst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/debian/preinst b/debian/preinst
index a7a5c7a54..198b8aee6 100755
--- a/debian/preinst
+++ b/debian/preinst
@@ -25,6 +25,9 @@ case "$1" in
     service nginx reload
     ;;
 
+  upgrade)
+    ;;
+
   abort-upgrade)
     ;;