diff --git a/pthreads/pthreads.php b/pthreads/pthreads.php
index 23894a0a..5bb0b076 100644
--- a/pthreads/pthreads.php
+++ b/pthreads/pthreads.php
@@ -177,6 +177,13 @@ class Threaded implements Collectable, Traversable, Countable, ArrayAccess {
      */
     protected $worker;
 
+    /**
+     * (PECL pthreads &gt;= 3.0.0)<br/>
+     * Increments the internal number of references to a Threaded object
+     * @return void
+     */
+    public function addRef() {}
+
     /**
      * (PECL pthreads &gt;= 2.0.0)<br/>
      * Fetches a chunk of the objects property table of the given size,
@@ -196,6 +203,13 @@ class Threaded implements Collectable, Traversable, Countable, ArrayAccess {
      */
     public function count() {}
 
+    /**
+     * (PECL pthreads &gt;= 3.0.0)<br/>
+     * Decrements the internal number of references to a Threaded object
+     * @return void
+     */
+    public function delRef() {}
+
     /**
      * (PECL pthreads &gt;= 2.0.8)<br/>
      * Makes thread safe standard class at runtime
@@ -205,6 +219,13 @@ class Threaded implements Collectable, Traversable, Countable, ArrayAccess {
      */
     public static function extend( $class ) {}
 
+    /**
+     * (PECL pthreads &gt;= 3.0.0)<br/>
+     * Retrieves the internal number of references to a Threaded object
+     * @return int <p>The number of references to the Threaded object</p>
+     */
+    public function getRefCount() {}
+
     /**
      * (PECL pthreads &lt; 3.0.0)<br/>
      * Retrieves terminal error information from the referenced object