diff --git a/Doxyfile b/Doxyfile
index fb53e475..fdb92fe3 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -31,7 +31,7 @@ PROJECT_NAME           = HTMLPurifier
 # This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 4.12.0
+PROJECT_NUMBER         = 4.13.0
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
 # base path where the generated documentation will be put.
diff --git a/NEWS b/NEWS
index c74d4b35..8e1b8e4c 100644
--- a/NEWS
+++ b/NEWS
@@ -9,7 +9,7 @@ NEWS ( CHANGELOG and HISTORY )                                     HTMLPurifier
     . Internal change
 ==========================
 
-4.13.0, unknown release date
+4.13.0, released 2020-06-28
 ! Add %HTML.Forms directive, which lets you accept forms in user
   HTML without requiring full %HTML.Trusted.  Note that forms can
   be (trivially) used to setup phishing; e.g., an attacker can
diff --git a/VERSION b/VERSION
index bcd250ed..01b73abe 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.12.0
\ No newline at end of file
+4.13.0
\ No newline at end of file
diff --git a/WHATSNEW b/WHATSNEW
index aec9b37c..ae24886e 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -1,2 +1,4 @@
-HTML Purifier 4.12.x is a maintenance release which makes
-compatibility fixes for PHP 7.4.
+HTML Purifier 4.13.x is a maintenance release which fixes
+PSR-0 compatibility of our package.  There are also a few
+new features (%HTML.Forms and tg@bgcolor support) and
+a number of minor bugfixes.
diff --git a/library/HTMLPurifier.includes.php b/library/HTMLPurifier.includes.php
index 3158b2b8..151e6752 100644
--- a/library/HTMLPurifier.includes.php
+++ b/library/HTMLPurifier.includes.php
@@ -7,7 +7,7 @@
  * primary concern and you are using an opcode cache. PLEASE DO NOT EDIT THIS
  * FILE, changes will be overwritten the next time the script is run.
  *
- * @version 4.12.0
+ * @version 4.13.0
  *
  * @warning
  *      You must *not* include any other HTML Purifier files before this file,
diff --git a/library/HTMLPurifier.php b/library/HTMLPurifier.php
index 10e61c14..3c0f8a0e 100644
--- a/library/HTMLPurifier.php
+++ b/library/HTMLPurifier.php
@@ -19,7 +19,7 @@
  */
 
 /*
-    HTML Purifier 4.12.0 - Standards Compliant HTML Filtering
+    HTML Purifier 4.13.0 - Standards Compliant HTML Filtering
     Copyright (C) 2006-2008 Edward Z. Yang
 
     This library is free software; you can redistribute it and/or
@@ -58,12 +58,12 @@ class HTMLPurifier
      * Version of HTML Purifier.
      * @type string
      */
-    public $version = '4.12.0';
+    public $version = '4.13.0';
 
     /**
      * Constant with version of HTML Purifier.
      */
-    const VERSION = '4.12.0';
+    const VERSION = '4.13.0';
 
     /**
      * Global configuration object.
diff --git a/library/HTMLPurifier/Config.php b/library/HTMLPurifier/Config.php
index 4ecaa141..3133d8a4 100644
--- a/library/HTMLPurifier/Config.php
+++ b/library/HTMLPurifier/Config.php
@@ -21,7 +21,7 @@ class HTMLPurifier_Config
      * HTML Purifier's version
      * @type string
      */
-    public $version = '4.12.0';
+    public $version = '4.13.0';
 
     /**
      * Whether or not to automatically finalize
diff --git a/update-for-release b/update-for-release
index 32709d25..2b9662a7 100644
--- a/update-for-release
+++ b/update-for-release
@@ -104,7 +104,7 @@ file_put_contents('library/HTMLPurifier/Config.php', $config_c);
 
 passthru('maintenance/flush.sh');
 
-if ($is_dev) echo "Review changes, write something in WHATSNEW and FOCUS, and then commit with log 'Release $version.'" . PHP_EOL;
+if ($is_dev) echo "Review changes, write something in WHATSNEW, and then commit with log 'Release $version.'" . PHP_EOL;
 else echo "Numbers updated to dev, no other modifications necessary!";
 
 // vim: et sw=4 sts=4