diff --git a/README.md b/README.md
index 79b3afa..c8593ea 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ syntax file distributed with Vim.
 The point of this fork is to embrace the latest and greatest PHP has to offer
 and constantly update against the latest PHP release.
 
-Last updated against **5.5.14**
+Last updated against **5.5.15**
 
   [StanAngeloff]: https://github.com/StanAngeloff/php.vim
   [garvin]:  https://github.com/vim-scripts/php.vim--Garvin
diff --git a/syntax/php.vim b/syntax/php.vim
index cf88c3e..5b1ecdb 100644
--- a/syntax/php.vim
+++ b/syntax/php.vim
@@ -346,6 +346,9 @@ syn keyword phpConstants RDBDEF_PORT RDBREC_INT RDBREC_DBL RDBQC_STREQ RDBQC_STR
 " uuid
 syn keyword phpConstants UUID_TYPE_DEFAULT UUID_TYPE_TIME UUID_TYPE_DCE UUID_TYPE_NAME UUID_TYPE_RANDOM UUID_TYPE_NULL UUID_TYPE_INVALID contained
 
+" varnish
+syn keyword phpConstants VARNISH_STATUS_SYNTAX VARNISH_STATUS_UNKNOWN VARNISH_STATUS_UNIMPL VARNISH_STATUS_TOOFEW VARNISH_STATUS_TOOMANY VARNISH_STATUS_PARAM VARNISH_STATUS_AUTH VARNISH_STATUS_OK VARNISH_STATUS_CANT VARNISH_STATUS_COMMS VARNISH_STATUS_CLOSE VARNISH_CONFIG_IDENT VARNISH_CONFIG_HOST VARNISH_CONFIG_PORT VARNISH_CONFIG_TIMEOUT VARNISH_CONFIG_SECRET VARNISH_CONFIG_COMPAT VARNISH_COMPAT_2 VARNISH_COMPAT_3 TAG_Debug TAG_Error TAG_CLI TAG_StatSess TAG_ReqEnd TAG_SessionOpen TAG_SessionClose TAG_BackendOpen TAG_BackendXID TAG_BackendReuse TAG_BackendClose TAG_HttpGarbage TAG_Backend TAG_Length TAG_FetchError TAG_RxRequest TAG_RxResponse TAG_RxStatus TAG_RxURL TAG_RxProtocol TAG_RxHeader TAG_TxRequest TAG_TxResponse TAG_TxStatus TAG_TxURL TAG_TxProtocol TAG_TxHeader TAG_ObjRequest TAG_ObjResponse TAG_ObjStatus TAG_ObjURL TAG_ObjProtocol TAG_ObjHeader TAG_LostHeader TAG_TTL TAG_Fetch_Body TAG_VCL_acl TAG_VCL_call TAG_VCL_trace TAG_VCL_return TAG_VCL_error TAG_ReqStart TAG_Hit TAG_HitPass TAG_ExpBan TAG_ExpKill TAG_WorkThread TAG_ESI_xmlerror TAG_Hash TAG_Backend_health TAG_VCL_Log TAG_Gzip contained
+
 " wbxml
 syn keyword phpConstants WBXML_VERSION_10 WBXML_VERSION_11 WBXML_VERSION_12 WBXML_VERSION_13 WBXML_LANG_UNKNOWN WBXML_LANG_WML10 WBXML_LANG_WML11 WBXML_LANG_WML12 WBXML_LANG_WML13 WBXML_LANG_WTA10 WBXML_LANG_WTAWML12 WBXML_LANG_CHANNEL11 WBXML_LANG_CHANNEL12 WBXML_LANG_SI10 WBXML_LANG_SL10 WBXML_LANG_CO10 WBXML_LANG_PROV10 WBXML_LANG_EMN10 WBXML_LANG_DRMREL10 WBXML_LANG_OTA_SETTINGS WBXML_LANG_SYNCML_SYNCML10 WBXML_LANG_SYNCML_DEVINF10 WBXML_LANG_SYNCML_METINF10 WBXML_LANG_SYNCML_SYNCML11 WBXML_LANG_SYNCML_DEVINF11 WBXML_LANG_SYNCML_METINF11 WBXML_LANG_SYNCML_SYNCML12 WBXML_LANG_SYNCML_DEVINF12 WBXML_LANG_SYNCML_METINF12 WBXML_LANG_WV_CSP11 WBXML_LANG_WV_CSP12 WBXML_LANG_AIRSYNC WBXML_GEN_XML_COMPACT WBXML_GEN_XML_INDENT WBXML_GEN_XML_CANONICAL contained
 
@@ -672,6 +675,9 @@ syn keyword phpClasses tokyotyrant tokyotyranttable tokyotyrantquery tokyotyrant
 syn keyword phpFunctions uploadprogress_get_info uploadprogress_get_contents contained
 " uuid
 syn keyword phpFunctions uuid_create uuid_is_valid uuid_compare uuid_is_null uuid_parse uuid_unparse contained
+" varnish
+syn keyword phpClasses VarnishAdmin VarnishStat VarnishLog VarnishException contained
+
 " wbxml
 syn keyword phpFunctions wbxml_encode wbxml_decode contained
 " wddx
diff --git a/update_syntax.php b/update_syntax.php
index 7830bc0..e899358 100644
--- a/update_syntax.php
+++ b/update_syntax.php
@@ -145,7 +145,7 @@ $allowed_extensions = [
 	'tokyo_tyrant',
 	'uploadprogress',
 	'uuid',
-	#'varnish',
+	'varnish',
 	'wbxml',
 	'wddx',
 	'xcache',