diff --git a/src/Repository.php b/src/Repository.php
index ed5cc97..d468791 100644
--- a/src/Repository.php
+++ b/src/Repository.php
@@ -126,7 +126,7 @@ public function pullMany(array $keys, $default = null)
      * @param  \DateTime|int  $minutes
      * @return void
      */
-    public function put($key, $value, $minutes)
+    public function put($key, $value, $minutes = null)
     {
         if (is_array($key) && is_array($value)) {
             $this->putMany(array_combine($key, $value), $minutes);