diff --git a/src/wp-content/themes/twentytwenty/classes/class-twentytwenty-svg-icons.php b/src/wp-content/themes/twentytwenty/classes/class-twentytwenty-svg-icons.php
index 714b3a1454..0e576f0af6 100644
--- a/src/wp-content/themes/twentytwenty/classes/class-twentytwenty-svg-icons.php
+++ b/src/wp-content/themes/twentytwenty/classes/class-twentytwenty-svg-icons.php
@@ -214,6 +214,18 @@ if ( ! class_exists( 'TwentyTwenty_SVG_Icons' ) ) {
 			'mail'      => array(
 				'mailto:',
 			),
+			'mastodon'  => array(
+				'mastodon.social',
+				'pawoo.net',
+				'mstdn.jp',
+				'mastodon.cloud',
+				'mastodon.online',
+				'counter.social',
+				'mstdn.social',
+				'mas.to',
+				'mastodon.world',
+				'gc2.jp',
+			),
 			'pocket'    => array(
 				'getpocket.com',
 			),
diff --git a/src/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-svg-icons.php b/src/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-svg-icons.php
index 3a82cf76ab..d88aabc094 100644
--- a/src/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-svg-icons.php
+++ b/src/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-svg-icons.php
@@ -127,6 +127,18 @@ class Twenty_Twenty_One_SVG_Icons {
 		'mail'      => array(
 			'mailto:',
 		),
+		'mastodon'  => array(
+			'mastodon.social',
+			'pawoo.net',
+			'mstdn.jp',
+			'mastodon.cloud',
+			'mastodon.online',
+			'counter.social',
+			'mstdn.social',
+			'mas.to',
+			'mastodon.world',
+			'gc2.jp',
+		),
 		'pocket'    => array(
 			'getpocket.com',
 		),