diff --git a/cache/installedVersion.json b/cache/installedVersion.json
index c654cda..7296cb6 100644
--- a/cache/installedVersion.json
+++ b/cache/installedVersion.json
@@ -1,4 +1,3 @@
 {
-  "id": 133359767,
-  "tag_name": "v2.8.9"
-}
+    "tag_name": "v2.8.9"
+}
\ No newline at end of file
diff --git a/system/admin/views/update.html.php b/system/admin/views/update.html.php
index e57d685..821417e 100644
--- a/system/admin/views/update.html.php
+++ b/system/admin/views/update.html.php
@@ -10,6 +10,26 @@ $updater = new HubUpdater(array(
     'prerelease' => !!config("prerelease"),
 ));
 
+$dir = 'cache/';
+if (!is_dir($dir)) {
+    mkdir($dir, 0775, true);
+}
+if (defined("JSON_PRETTY_PRINT")) {
+    file_put_contents(
+        'cache/installedVersion.json',
+        json_encode(array(
+            "tag_name" => constant('HTMLY_VERSION')
+        ), JSON_PRETTY_PRINT)
+    );
+} else {
+    file_put_contents(
+        'cache/installedVersion.json',
+        json_encode(array(
+            "tag_name" => constant('HTMLY_VERSION')
+        ))
+    );
+}
+
 if (empty($updater->getNewestInfo())) {
     echo '<h2>'.i18n('Update').'</h2><hr>';
     echo "Can't check Github server for latest version. You are probably offline.";
diff --git a/system/includes/dispatch.php b/system/includes/dispatch.php
index 5758f2d..fcc5d6a 100644
--- a/system/includes/dispatch.php
+++ b/system/includes/dispatch.php
@@ -184,15 +184,15 @@ function delete_cookie()
         setcookie($ck, '', -10, '/');
 }
 
-// if we have APC loaded, enable cache functions
-if (extension_loaded('apc')) {
+// if we have APCu loaded, enable cache functions
+if (extension_loaded('apcu')) {
 
     function cache($key, $func, $ttl = 0)
     {
-        if (($data = apc_fetch($key)) === false) {
+        if (($data = apcu_fetch($key)) === false) {
             $data = call_user_func($func);
             if ($data !== null) {
-                apc_store($key, $data, $ttl);
+                apcu_store($key, $data, $ttl);
             }
         }
         return $data;
@@ -201,7 +201,7 @@ if (extension_loaded('apc')) {
     function cache_invalidate()
     {
         foreach (func_get_args() as $key) {
-            apc_delete($key);
+            apcu_delete($key);
         }
     }
 
diff --git a/system/includes/functions.php b/system/includes/functions.php
index afaeb7b..b577891 100644
--- a/system/includes/functions.php
+++ b/system/includes/functions.php
@@ -255,7 +255,7 @@ function rebuilt_cache($type = null)
     $category_cache = array();
     $draft_cache = array();
 
-    if (is_dir($dir) === false) {
+    if (!is_dir($dir)) {
         mkdir($dir, 0775, true);
     }
 
@@ -1001,7 +1001,7 @@ function category_list($custom = null) {
     $cat = array();
     $list = array();
 
-    if (is_dir($dir) === false) {
+    if (!is_dir($dir)) {
         mkdir($dir, 0775, true);
     }
 
@@ -1455,7 +1455,7 @@ function recent_posts($custom = null, $count = null)
     $tmp = array();
     $posts = array();
 
-    if (is_dir($dir) === false) {
+    if (!is_dir($dir)) {
         mkdir($dir, 0775, true);
     }
 
@@ -1502,7 +1502,7 @@ function recent_type($type, $custom = null, $count = null)
     $tmp = array();
     $posts = array();
 
-    if (is_dir($dir) === false) {
+    if (!is_dir($dir)) {
         mkdir($dir, 0775, true);
     }
 
@@ -1572,7 +1572,7 @@ function popular_posts($custom = null, $count = null)
                     $ar = array();
                     $posts = array();
 
-                    if (is_dir($dir) === false) {
+                    if (!is_dir($dir)) {
                         mkdir($dir, 0775, true);
                     }
 
@@ -1631,7 +1631,7 @@ function archive_list($custom = null)
     $filename = "cache/widget/archive.cache";
     $ar = array();
 
-    if (is_dir($dir) === false) {
+    if (!is_dir($dir)) {
         mkdir($dir, 0775, true);
     }
 
@@ -1738,7 +1738,7 @@ function tag_cloud($custom = null)
     $filename = "cache/widget/tags.cache";
     $tg = array();
 
-    if (is_dir($dir) === false) {
+    if (!is_dir($dir)) {
         mkdir($dir, 0775, true);
     }