diff --git a/Dockerfile b/Dockerfile
index e366a67..4be13a4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG WP_VERSION=5.4.2
+ARG WP_VERSION=5.5.1
 FROM wordpress:${WP_VERSION}-php7.4-fpm-alpine AS wordpress-builder
 
 USER root
diff --git a/rootfs/etc/wp-mods/wp-admin/update-core.php.patch b/rootfs/etc/wp-mods/wp-admin/update-core.php.patch
index 3cf0767..6b4b9e4 100644
--- a/rootfs/etc/wp-mods/wp-admin/update-core.php.patch
+++ b/rootfs/etc/wp-mods/wp-admin/update-core.php.patch
@@ -1,14 +1,14 @@
---- update-core.php	2020-10-04 19:03:07.898527934 +0200
-+++ update-core-mod.php	2020-10-04 19:04:59.434908923 +0200
-@@ -915,6 +915,11 @@
+--- update-core.php	2020-10-04 19:51:51.874573636 +0200
++++ update-core-mod.php	2020-10-04 19:53:36.705858923 +0200
+@@ -917,6 +917,11 @@
  		wp_die( __( 'Sorry, you are not allowed to update this site.' ) );
  	}
  
-+        wp_die(
-+            __( 'Sorry, you are not allowed to update this site.' ) .
-+            ' Click <a href="https://github.com/N0rthernL1ghts/wordpress/wiki/WordPress-Core-Updates">here</a> to learn why.'
-+        );
++	wp_die(
++		__( 'Sorry, you are not allowed to update this site.' ) .
++		' Click <a href="https://github.com/N0rthernL1ghts/wordpress/wiki/WordPress-Core-Updates">here</a> to learn why.'
++	);
 +
- 	check_admin_referer( 'upgrade-translations' );
+ 	check_admin_referer( 'upgrade-core' );
  
- 	require_once ABSPATH . 'wp-admin/admin-header.php';
+ 	// Do the (un)dismiss actions before headers, so that they can redirect.