diff --git a/src/RedLock.php b/src/RedLock.php
index 201feaf..0a085d4 100644
--- a/src/RedLock.php
+++ b/src/RedLock.php
@@ -26,7 +26,7 @@ public function lock($resource, $ttl)
     {
         $this->initInstances();
 
-        $token = uniqid();
+        $token = $this->generateToken();
         $retry = $this->retryCount;
 
         do {
@@ -82,6 +82,10 @@ public function unlock($lock)
         }
     }
 
+    protected function generateToken() {
+        return uniqid();
+    }
+
     private function initInstances()
     {
         if (empty($this->instances)) {