diff --git a/build/build.xml b/build/build.xml
index 7d9def981a..6e209dfc87 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -2,7 +2,7 @@
 
 <project name="phpBB" description="The phpBB forum software" default="all" basedir="../">
 	<!-- a few settings for the build -->
-	<property name="newversion" value="3.1.9-dev" />
+	<property name="newversion" value="3.1.9-RC1" />
 	<property name="prevversion" value="3.1.8" />
 	<property name="olderversions" value="3.0.14, 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.1.7-pl1" />
 	<!-- no configuration should be needed beyond this point -->
diff --git a/phpBB/includes/constants.php b/phpBB/includes/constants.php
index a6decaa0e8..be0a9c0d82 100644
--- a/phpBB/includes/constants.php
+++ b/phpBB/includes/constants.php
@@ -28,7 +28,7 @@ if (!defined('IN_PHPBB'))
 */
 
 // phpBB Version
-define('PHPBB_VERSION', '3.1.9-dev');
+define('PHPBB_VERSION', '3.1.9-RC1');
 
 // QA-related
 // define('PHPBB_QA', 1);
diff --git a/phpBB/install/convertors/convert_phpbb20.php b/phpBB/install/convertors/convert_phpbb20.php
index b670678cf3..838ce1a682 100644
--- a/phpBB/install/convertors/convert_phpbb20.php
+++ b/phpBB/install/convertors/convert_phpbb20.php
@@ -38,7 +38,7 @@ $dbms = $phpbb_config_php_file->convert_30_dbms_to_31($dbms);
 $convertor_data = array(
 	'forum_name'	=> 'phpBB 2.0.x',
 	'version'		=> '1.0.3',
-	'phpbb_version'	=> '3.1.8',
+	'phpbb_version'	=> '3.1.9',
 	'author'		=> '<a href="https://www.phpbb.com/">phpBB Limited</a>',
 	'dbms'			=> $dbms,
 	'dbhost'		=> $dbhost,
diff --git a/phpBB/install/schemas/schema_data.sql b/phpBB/install/schemas/schema_data.sql
index 179d890a8e..84d0cb3e59 100644
--- a/phpBB/install/schemas/schema_data.sql
+++ b/phpBB/install/schemas/schema_data.sql
@@ -273,7 +273,7 @@ INSERT INTO phpbb_config (config_name, config_value) VALUES ('tpl_allow_php', '0
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('upload_icons_path', 'images/upload_icons');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('upload_path', 'files');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('use_system_cron', '0');
-INSERT INTO phpbb_config (config_name, config_value) VALUES ('version', '3.1.9-dev');
+INSERT INTO phpbb_config (config_name, config_value) VALUES ('version', '3.1.9-RC1');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('warnings_expire_days', '90');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('warnings_gc', '14400');
 
diff --git a/phpBB/styles/prosilver/style.cfg b/phpBB/styles/prosilver/style.cfg
index b4bd158a08..ed1790f802 100644
--- a/phpBB/styles/prosilver/style.cfg
+++ b/phpBB/styles/prosilver/style.cfg
@@ -21,8 +21,8 @@
 # General Information about this style
 name = prosilver
 copyright = © phpBB Limited, 2007
-style_version = 3.1.8
-phpbb_version = 3.1.8
+style_version = 3.1.9
+phpbb_version = 3.1.9
 
 # Defining a different template bitfield
 # template_bitfield = lNg=
diff --git a/phpBB/styles/subsilver2/style.cfg b/phpBB/styles/subsilver2/style.cfg
index 96d967b772..d728e27baf 100644
--- a/phpBB/styles/subsilver2/style.cfg
+++ b/phpBB/styles/subsilver2/style.cfg
@@ -21,8 +21,8 @@
 # General Information about this style
 name = subsilver2
 copyright = © 2005 phpBB Limited
-style_version = 3.1.8
-phpbb_version = 3.1.8
+style_version = 3.1.9
+phpbb_version = 3.1.9
 
 # Defining a different template bitfield
 # template_bitfield = lNg=