diff --git a/advanced-cache.php b/advanced-cache.php
index 2be46f76101374d9353fb06ce38a31b443ddc8d2..b0524d1c8a1e062d25b8fe769b1aea7ded45ddf5 100644
--- a/advanced-cache.php
+++ b/advanced-cache.php
@@ -35,7 +35,6 @@ $path = sprintf(
 $path = rtrim($path, '/\\') . '/';
 
 $path_html = $path . 'index.html';
-$path_gzip = $path . 'index.html.gz';
 
 if (is_readable($path_html)
     && ($buffer = file_get_contents($path_html)) !== false
@@ -56,15 +55,6 @@ if (is_readable($path_html)
         exit;
     }
 
-    if (is_readable($path_gzip)
-        && ($buffer = file_get_contents($path_gzip)) !== false
-        && $http_accept_encoding
-        && strpos($http_accept_encoding, 'gzip') !== false) {
-        header('Content-Encoding: gzip');
-        echo $buffer;
-        exit;
-    }
-
     echo $buffer;
     exit;
 }
diff --git a/includes/File.php b/includes/File.php
index 445ce8a1e906192c7e2964a7eea112a85e0be02f..ead809f0fc558d64bc2acb724913a35cf4a12bd1 100644
--- a/includes/File.php
+++ b/includes/File.php
@@ -107,7 +107,6 @@ final class File
         }
 
         self::writeFile(self::fileHtml(), $data);
-        self::writeFile(self::fileGzip(), gzencode($data, 9));
         return true;
     }
 
@@ -267,12 +266,4 @@ final class File
         return self::filePath() . 'index.html';
     }
 
-    /**
-     * [fileGzip description]
-     * @return string [description]
-     */
-    protected static function fileGzip()
-    {
-        return self::filePath() . 'index.html.gz';
-    }
 }
diff --git a/rrze-cache.php b/rrze-cache.php
index fb7f8c3228e5a688b0556d81e1c3bd596f89a33c..677843e9a7ebdb485c9040bf107061775ddcb2cf 100644
--- a/rrze-cache.php
+++ b/rrze-cache.php
@@ -4,7 +4,7 @@
 Plugin Name:     RRZE Cache
 Plugin URI:      https://gitlab.rrze.fau.de/rrze-webteam/rrze-cache
 Description:     Advanced cache management.
-Version:         2.2.0
+Version:         2.3.0
 Author:          RRZE-Webteam
 Author URI:      https://blogs.fau.de/webworking/
 License:         GNU General Public License v2
@@ -19,7 +19,7 @@ namespace RRZE\Cache;
 defined('ABSPATH') || exit;
 
 const RRZE_PHP_VERSION = '7.4';
-const RRZE_WP_VERSION = '5.3';
+const RRZE_WP_VERSION = '5.4';
 
 const RRZECACHE_META_KEY = '_rrze_cache';
 const ACCESS_PERMISSION_META_KEY = '_access_permission'; // rrze-ac plugin