diff --git a/README.md b/README.md
index 4774ebf..095e943 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 **5.5.8**
+Last updated against **5.5.9**
 
   [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 4de5e9e..977ab9e 100644
Binary files a/syntax/php.vim and b/syntax/php.vim differ
diff --git a/update_syntax.php b/update_syntax.php
index 2cf2a4c..c1da10b 100644
--- a/update_syntax.php
+++ b/update_syntax.php
@@ -31,29 +31,35 @@
  * shared) for these constants to show up.
  */
 $allowed_extensions = [
+	'amqp',
+	'apcu',
 	'bcmath',
 	'bz2',
 	'calendar',
-	// 'com_dotnet',
+	#'com_dotnet',
 	'core',
+	'couchbase',
 	'ctype',
 	'curl',
 	'date',
 	'dba',
 	'dom',
-	// 'enchant',
+	#'enchant',
 	'ereg',
 	'exif',
 	'fileinfo',
 	'filter',
 	'ftp',
 	'gd',
+	'geoip',
 	'gettext',
-	// 'gmp',
+	'gmagick',
+	#'gmp',
 	'hash',
 	'iconv',
-	// 'imap',
-	// 'interbase',
+	'imagick',
+	#'imap',
+	#'interbase',
 	'intl',
 	'json',
 	'ldap',
@@ -63,11 +69,13 @@ $allowed_extensions = [
 	'memcache',
 	'memcached',
 	'mhash',
-	// 'mssql',
+	'mongo',
+	#'mssql',
 	'mysql',
 	'mysqli',
-	// 'oci8',
-	// 'oci8_11g',
+	'oauth',
+	#'oci8',
+	#'oci8_11g',
 	'odbc',
 	'openssl',
 	'pcre',
@@ -78,7 +86,7 @@ $allowed_extensions = [
 	'posix',
 	'pspell',
 	'readline',
-	// 'recode',
+	#'recode',
 	'redis',
 	'reflection',
 	'session',
@@ -88,16 +96,18 @@ $allowed_extensions = [
 	'soap',
 	'sockets',
 	'spl',
-	// 'sqlite',
+	#'sqlite',
 	'sqlite3',
 	'standard',
-	// 'sybase_ct',
+	#'sybase_ct',
 	'sysvmsg',
 	'sysvsem',
 	'sysvshm',
-	// 'tidy',
-	'tokenizer',
 	'test_helpers',
+	'tidy',
+	'tokenizer',
+	#'tokyotyrant',
+	#'varnish',
 	'wddx',
 	'xdebug',
 	'xml',
@@ -105,6 +115,7 @@ $allowed_extensions = [
 	'xmlrpc',
 	'xmlwriter',
 	'xsl',
+	'yaml',
 	'zip',
 	'zlib',
 ];