diff --git a/squid-4.0.22.tar.xz b/squid-4.0.22.tar.xz
deleted file mode 100644
index dacbc70..0000000
--- a/squid-4.0.22.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:51b852f17c21569d53bcd098d2c55a4e0c745e9cac392cff26d92681e911a5a2
-size 2411692
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deleted file mode 100644
index 0c19f49..0000000
--- a/squid-4.0.22.tar.xz.asc
+++ /dev/null
@@ -1,25 +0,0 @@
-File: squid-4.0.22.tar.xz
-Date: Thu Dec  7 18:03:01 UTC 2017
-Size: 2411692
-MD5 : c09dab527ac8ea86833286597d2d633d
-SHA1: b3e1cfe1cc1074506a46652946efe175eb69bf8a
-Key : CD6DBF8EF3B17D3E <squid3@treenet.co.nz>
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-      keyring = http://www.squid-cache.org/pgp.asc
-      keyserver = pool.sks-keyservers.net
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diff --git a/squid-4.0.23.tar.xz b/squid-4.0.23.tar.xz
new file mode 100644
index 0000000..80563de
--- /dev/null
+++ b/squid-4.0.23.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:18b71a601f60f49ca0cfc7d1d212dc935112d61008ab8a689fceab3ef4070f29
+size 2415132
diff --git a/squid-4.0.23.tar.xz.asc b/squid-4.0.23.tar.xz.asc
new file mode 100644
index 0000000..23d3499
--- /dev/null
+++ b/squid-4.0.23.tar.xz.asc
@@ -0,0 +1,25 @@
+File: squid-4.0.23.tar.xz
+Date: Fri Jan 19 13:39:51 UTC 2018
+Size: 2415132
+MD5 : 04eb448f1dc31b4b2d73fee6a91c240c
+SHA1: 0bd4248b412e88087ba37686bc27b08480995a9d
+Key : CD6DBF8EF3B17D3E <squid3@treenet.co.nz>
+            B068 84ED B779 C89B 044E  64E3 CD6D BF8E F3B1 7D3E
+      keyring = http://www.squid-cache.org/pgp.asc
+      keyserver = pool.sks-keyservers.net
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diff --git a/squid.changes b/squid.changes
index d274957..fe19052 100644
--- a/squid.changes
+++ b/squid.changes
@@ -1,3 +1,17 @@
+-------------------------------------------------------------------
+Mon Jan 22 12:48:24 UTC 2018 - adam.majer@suse.de
+
+- Update Squid to 4.0.23
+  * fixes DoS caused by incorrect pointer handling when processing
+  ESI responses. This affects the default custom esi_parser
+  (libxml2 and expat esi_parsers are unaffected)
+  (bnc#1077003)
+  * fixes DoS caused by incorrect pointer handing whien processing
+  ESI responses or downloading intermediate CA certificates
+  (bnc#1077006)
+  * fixes "User names not sent to url_rewrite_program"
+  * fixes %<Hs, %<pt, %<tt, %<bs calculation bugs for error responses
+
 -------------------------------------------------------------------
 Tue Jan  9 17:06:14 UTC 2018 - mpluskal@suse.com
 
diff --git a/squid.spec b/squid.spec
index 80bf580..fb2bb07 100644
--- a/squid.spec
+++ b/squid.spec
@@ -23,12 +23,12 @@
   %define _fillupdir %{_localstatedir}/adm/fillup-templates
 %endif
 Name:           squid
-Version:        4.0.22
+Version:        4.0.23
 Release:        0
 Summary:        Caching and forwarding HTTP web proxy
 License:        GPL-2.0+
 Group:          Productivity/Networking/Web/Proxy
-URL:            http://www.squid-cache.org
+Url:            http://www.squid-cache.org
 Source0:        http://www.squid-cache.org/Versions/v4/squid-%{version}.tar.xz
 Source1:        http://www.squid-cache.org/Versions/v4/squid-%{version}.tar.xz.asc
 Source4:        squid.sysconfig