diff --git a/source/admin/class-wpoven-triple-cache-admin.php b/source/admin/class-wpoven-triple-cache-admin.php
index 4e96190..06aec1f 100755
--- a/source/admin/class-wpoven-triple-cache-admin.php
+++ b/source/admin/class-wpoven-triple-cache-admin.php
@@ -450,7 +450,6 @@ function wildcard_match($pattern, $subject)
 
 		if (!preg_match($pattern, $subject, $regs))
 			return false;
-
 		return true;
 	}
 
diff --git a/source/libs/backend.class.php b/source/libs/backend.class.php
index 4c3faba..2852aa7 100755
--- a/source/libs/backend.class.php
+++ b/source/libs/backend.class.php
@@ -69,7 +69,7 @@ function autoprefetch_config_wp_enqueue_scripts()
          *
          * https://wordpress.stackexchange.com/questions/298762/wp-add-inline-script-without-dependency/311279#311279
          */
-        wp_register_script('wpocf_auto_prefetch_url', '', [], '', true);
+        wp_register_script('wpocf_auto_prefetch_url', '', [], '1.0.0', true);
         wp_enqueue_script('wpocf_auto_prefetch_url');
 
         // Making sure we are not adding the following inline script for AMP endpoints as they are not gonna work anyway and will be striped out by the AMP system
diff --git a/source/libs/cache_controller.class.php b/source/libs/cache_controller.class.php
index 881ac86..f671378 100755
--- a/source/libs/cache_controller.class.php
+++ b/source/libs/cache_controller.class.php
@@ -1517,7 +1517,7 @@ function purge_cache_queue_write($urls = array(), $purge_all = false)
 
         if (file_exists($cache_queue_path)) {
 
-            $wpocf_cache_queue = json_decode(file_get_contents($cache_queue_path), true);
+            $wpocf_cache_queue = json_decode(wp_remote_get($cache_queue_path), true);
 
             if (!is_array($wpocf_cache_queue) || (is_array($wpocf_cache_queue) && (!isset($wpocf_cache_queue['purge_all']) || !isset($wpocf_cache_queue['urls'])))) {
                 $this->unlock_cache_purge_queue();
@@ -1539,7 +1539,15 @@ function purge_cache_queue_write($urls = array(), $purge_all = false)
                 $urls = array();
             $wpocf_cache_queue = array('purge_all' => $purge_all, 'urls' => $urls);
         }
-        file_put_contents($cache_queue_path, wp_json_encode($wpocf_cache_queue));
+
+        global $wp_filesystem;
+        // Load the WP_Filesystem API if not already loaded
+        if (empty($wp_filesystem)) {
+            require_once ABSPATH . 'wp-admin/includes/file.php';
+            WP_Filesystem();
+        }
+
+        $wp_filesystem->put_contents($cache_queue_path, wp_json_encode($wpocf_cache_queue), FS_CHMOD_FILE);
 
         $this->unlock_cache_purge_queue();
     }
@@ -1608,7 +1616,7 @@ function purge_cache_queue_job()
 
         $this->lock_cache_purge_queue();
 
-        $wpocf_cache_queue = json_decode(file_get_contents($cache_queue_path), true);
+        $wpocf_cache_queue = json_decode(wp_remote_get($cache_queue_path), true);
 
         if (isset($wpocf_cache_queue['purge_all']) && $wpocf_cache_queue['purge_all']) {
             $this->purge_all(false, false);
@@ -1616,7 +1624,7 @@ function purge_cache_queue_job()
             $this->purge_urls($wpocf_cache_queue['urls'], false);
         }
 
-        @unlink($cache_queue_path);
+        @wp_delete_file($cache_queue_path);
 
         $this->unlock_cache_purge_queue();