diff --git a/wp-content/themes/twentyeleven/readme.txt b/wp-content/themes/twentyeleven/readme.txt
index 1276e73f82..61bf8648f4 100644
--- a/wp-content/themes/twentyeleven/readme.txt
+++ b/wp-content/themes/twentyeleven/readme.txt
@@ -1,7 +1,7 @@
 === Twenty Eleven ===
 Contributors: wordpressdotorg
 Requires at least: WordPress 3.2
-Tested up to: 5.7
+Tested up to: 5.8
 Stable tag: 3.7
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
diff --git a/wp-content/themes/twentyfifteen/readme.txt b/wp-content/themes/twentyfifteen/readme.txt
index f1f69668d7..8642f82fa4 100644
--- a/wp-content/themes/twentyfifteen/readme.txt
+++ b/wp-content/themes/twentyfifteen/readme.txt
@@ -1,7 +1,7 @@
 === Twenty Fifteen ===
 Contributors: wordpressdotorg
 Requires at least: WordPress 4.1
-Tested up to: 5.7
+Tested up to: 5.8
 Version: 2.9
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
diff --git a/wp-content/themes/twentyfourteen/readme.txt b/wp-content/themes/twentyfourteen/readme.txt
index 2d8973af58..67d6f8147d 100644
--- a/wp-content/themes/twentyfourteen/readme.txt
+++ b/wp-content/themes/twentyfourteen/readme.txt
@@ -1,7 +1,7 @@
 === Twenty Fourteen ===
 Contributors: wordpressdotorg
 Requires at least: WordPress 3.6
-Tested up to: 5.7
+Tested up to: 5.8
 Stable tag: 3.1
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
diff --git a/wp-content/themes/twentynineteen/readme.txt b/wp-content/themes/twentynineteen/readme.txt
index 2d832ee289..6ba4a862be 100644
--- a/wp-content/themes/twentynineteen/readme.txt
+++ b/wp-content/themes/twentynineteen/readme.txt
@@ -2,7 +2,7 @@
 Contributors: wordpressdotorg
 Tags: one-column, flexible-header, accessibility-ready, custom-colors, custom-menu, custom-logo, editor-style, featured-images, footer-widgets, rtl-language-support, sticky-post, threaded-comments, translation-ready, block-patterns
 Requires at least: 4.9.6
-Tested up to: 5.7
+Tested up to: 5.8
 Stable tag: 2.0
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
diff --git a/wp-content/themes/twentyseventeen/readme.txt b/wp-content/themes/twentyseventeen/readme.txt
index 38ff68ff7e..27eb55af4a 100644
--- a/wp-content/themes/twentyseventeen/readme.txt
+++ b/wp-content/themes/twentyseventeen/readme.txt
@@ -1,6 +1,6 @@
 === Twenty Seventeen ===
 Contributors: wordpressdotorg
-Tested up to: 5.7
+Tested up to: 5.8
 Version: 2.7
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
diff --git a/wp-content/themes/twentysixteen/readme.txt b/wp-content/themes/twentysixteen/readme.txt
index e4f7c5f7c0..9f7a2e4527 100644
--- a/wp-content/themes/twentysixteen/readme.txt
+++ b/wp-content/themes/twentysixteen/readme.txt
@@ -1,6 +1,6 @@
 === Twenty Sixteen ===
 Contributors: wordpressdotorg
-Tested up to: 5.7
+Tested up to: 5.8
 Version: 2.4
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
diff --git a/wp-content/themes/twentyten/readme.txt b/wp-content/themes/twentyten/readme.txt
index b509dc64b6..b742e12d05 100644
--- a/wp-content/themes/twentyten/readme.txt
+++ b/wp-content/themes/twentyten/readme.txt
@@ -1,6 +1,6 @@
 === Twenty Ten ===
 Contributors: wordpressdotorg
-Tested up to: 5.7
+Tested up to: 5.8
 Stable tag: 3.3
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
diff --git a/wp-content/themes/twentythirteen/readme.txt b/wp-content/themes/twentythirteen/readme.txt
index d948809b68..4990d53728 100644
--- a/wp-content/themes/twentythirteen/readme.txt
+++ b/wp-content/themes/twentythirteen/readme.txt
@@ -1,6 +1,6 @@
 === Twenty Thirteen ===
 Contributors: wordpressdotorg
-Tested up to: 5.7
+Tested up to: 5.8
 Stable tag: 3.3
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
diff --git a/wp-content/themes/twentytwelve/readme.txt b/wp-content/themes/twentytwelve/readme.txt
index 4a7fff998f..877c3cf6ad 100644
--- a/wp-content/themes/twentytwelve/readme.txt
+++ b/wp-content/themes/twentytwelve/readme.txt
@@ -1,6 +1,6 @@
 === Twenty Twelve ===
 Contributors: wordpressdotorg
-Tested up to: 5.7
+Tested up to: 5.8
 Stable tag: 3.3
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
diff --git a/wp-content/themes/twentytwenty/readme.txt b/wp-content/themes/twentytwenty/readme.txt
index 824f1650b2..74421dd8f0 100644
--- a/wp-content/themes/twentytwenty/readme.txt
+++ b/wp-content/themes/twentytwenty/readme.txt
@@ -1,6 +1,6 @@
 === Twenty Twenty ===
 Contributors: the WordPress team
-Tested up to: 5.7
+Tested up to: 5.8
 Stable tag: 1.7
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
diff --git a/wp-content/themes/twentytwentyone/assets/css/ie.css b/wp-content/themes/twentytwentyone/assets/css/ie.css
index c6793f3f72..91eaa1e291 100644
--- a/wp-content/themes/twentytwentyone/assets/css/ie.css
+++ b/wp-content/themes/twentytwentyone/assets/css/ie.css
@@ -7,7 +7,7 @@ Author: the WordPress team
 Author URI: https://wordpress.org/
 Description: Twenty Twenty-One is a blank canvas for your ideas and it makes the block editor your best brush. With new block patterns, which allow you to create a beautiful layout in a matter of seconds, this theme’s soft colors and eye-catching — yet timeless — design will let your work shine. Take it for a spin! See how Twenty Twenty-One elevates your portfolio, business website, or personal blog.
 Requires at least: 5.3
-Tested up to: 5.7
+Tested up to: 5.8
 Requires PHP: 5.6
 Version: 1.3
 License: GNU General Public License v2 or later
diff --git a/wp-content/themes/twentytwentyone/assets/sass/01-settings/file-header.scss b/wp-content/themes/twentytwentyone/assets/sass/01-settings/file-header.scss
index 033c2e1b5a..8e1cd5764a 100644
--- a/wp-content/themes/twentytwentyone/assets/sass/01-settings/file-header.scss
+++ b/wp-content/themes/twentytwentyone/assets/sass/01-settings/file-header.scss
@@ -5,7 +5,7 @@ Author: the WordPress team
 Author URI: https://wordpress.org/
 Description: Twenty Twenty-One is a blank canvas for your ideas and it makes the block editor your best brush. With new block patterns, which allow you to create a beautiful layout in a matter of seconds, this theme’s soft colors and eye-catching — yet timeless — design will let your work shine. Take it for a spin! See how Twenty Twenty-One elevates your portfolio, business website, or personal blog.
 Requires at least: 5.3
-Tested up to: 5.7
+Tested up to: 5.8
 Requires PHP: 5.6
 Version: 1.3
 License: GNU General Public License v2 or later
diff --git a/wp-content/themes/twentytwentyone/readme.txt b/wp-content/themes/twentytwentyone/readme.txt
index 7db73e3a48..c168648ea0 100644
--- a/wp-content/themes/twentytwentyone/readme.txt
+++ b/wp-content/themes/twentytwentyone/readme.txt
@@ -1,7 +1,7 @@
 === Twenty Twenty-One ===
 Contributors: wordpressdotorg
 Requires at least: 5.3
-Tested up to: 5.7
+Tested up to: 5.8
 Requires PHP: 5.6
 Stable tag: 1.3
 License: GPLv2 or later
diff --git a/wp-content/themes/twentytwentyone/style-rtl.css b/wp-content/themes/twentytwentyone/style-rtl.css
index a97d91e8f2..7c3ce0b682 100644
--- a/wp-content/themes/twentytwentyone/style-rtl.css
+++ b/wp-content/themes/twentytwentyone/style-rtl.css
@@ -7,7 +7,7 @@ Author: the WordPress team
 Author URI: https://wordpress.org/
 Description: Twenty Twenty-One is a blank canvas for your ideas and it makes the block editor your best brush. With new block patterns, which allow you to create a beautiful layout in a matter of seconds, this theme’s soft colors and eye-catching — yet timeless — design will let your work shine. Take it for a spin! See how Twenty Twenty-One elevates your portfolio, business website, or personal blog.
 Requires at least: 5.3
-Tested up to: 5.7
+Tested up to: 5.8
 Requires PHP: 5.6
 Version: 1.3
 License: GNU General Public License v2 or later
diff --git a/wp-content/themes/twentytwentyone/style.css b/wp-content/themes/twentytwentyone/style.css
index a311ccc6db..22294f1e30 100644
--- a/wp-content/themes/twentytwentyone/style.css
+++ b/wp-content/themes/twentytwentyone/style.css
@@ -7,7 +7,7 @@ Author: the WordPress team
 Author URI: https://wordpress.org/
 Description: Twenty Twenty-One is a blank canvas for your ideas and it makes the block editor your best brush. With new block patterns, which allow you to create a beautiful layout in a matter of seconds, this theme’s soft colors and eye-catching — yet timeless — design will let your work shine. Take it for a spin! See how Twenty Twenty-One elevates your portfolio, business website, or personal blog.
 Requires at least: 5.3
-Tested up to: 5.7
+Tested up to: 5.8
 Requires PHP: 5.6
 Version: 1.3
 License: GNU General Public License v2 or later
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 6d111dbbc5..a01217404b 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.8-alpha-51041';
+$wp_version = '5.8-alpha-51042';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.