diff -Nru squid3-3.3.8/debian/changelog squid3-3.3.8/debian/changelog
--- squid3-3.3.8/debian/changelog	2015-07-01 22:25:59.000000000 +0000
+++ squid3-3.3.8/debian/changelog	2015-10-14 16:48:40.000000000 +0000
@@ -1,3 +1,10 @@
+squid3 (3.3.8-1ubuntu6.4) trusty-proposed; urgency=low
+
+  * d/squid3.upstart: Use SIGINT to terminate squid and wait at most 40
+    seconds for it to finish. (LP: #1073478)
+
+ -- Tiago Stürmer Daitx <tiago.daitx@canonical.com>  Wed, 14 Oct 2015 02:54:20 +0000
+
 squid3 (3.3.8-1ubuntu6.3) trusty-proposed; urgency=low
 
   * d/patches/fix-caching-vary-header.patch: Added upstream patch
diff -Nru squid3-3.3.8/debian/squid3.upstart squid3-3.3.8/debian/squid3.upstart
--- squid3-3.3.8/debian/squid3.upstart	2013-12-11 10:50:28.000000000 +0000
+++ squid3-3.3.8/debian/squid3.upstart	2015-10-14 16:48:40.000000000 +0000
@@ -12,6 +12,9 @@
 respawn
 normal exit 0
 
+kill signal SIGINT
+kill timeout 40
+
 env CONFIG="/etc/squid3/squid.conf"
 env SQUID_ARGS="-YC"