diff --git a/HttpCache/Store.php b/HttpCache/Store.php
index acddb82652..1029a37e6c 100644
--- a/HttpCache/Store.php
+++ b/HttpCache/Store.php
@@ -25,8 +25,8 @@
 class Store implements StoreInterface
 {
     protected $root;
-    private $keyCache;
-    private $locks;
+    protected $keyCache;
+    protected $locks;
 
     /**
      * Constructor.
@@ -258,7 +258,7 @@ public function invalidate(Request $request)
      *
      * @return Boolean true if the two environments match, false otherwise
      */
-    private function requestsMatch($vary, $env1, $env2)
+    protected function requestsMatch($vary, $env1, $env2)
     {
         if (empty($vary)) {
             return true;
@@ -285,7 +285,7 @@ private function requestsMatch($vary, $env1, $env2)
      *
      * @return array An array of data associated with the key
      */
-    private function getMetadata($key)
+    protected function getMetadata($key)
     {
         if (false === $entries = $this->load($key)) {
             return array();
@@ -319,7 +319,7 @@ public function purge($url)
      *
      * @return string The data associated with the key
      */
-    private function load($key)
+    protected function load($key)
     {
         $path = $this->getPath($key);
 
@@ -334,7 +334,7 @@ private function load($key)
      *
      * @return Boolean
      */
-    private function save($key, $data)
+    protected function save($key, $data)
     {
         $path = $this->getPath($key);
         if (!is_dir(dirname($path)) && false === @mkdir(dirname($path), 0777, true)) {
@@ -371,7 +371,7 @@ public function getPath($key)
      *
      * @return string A key for the given Request
      */
-    private function getCacheKey(Request $request)
+    protected function getCacheKey(Request $request)
     {
         if (isset($this->keyCache[$request])) {
             return $this->keyCache[$request];
@@ -387,7 +387,7 @@ private function getCacheKey(Request $request)
      *
      * @return array An array of HTTP headers
      */
-    private function persistRequest(Request $request)
+    protected function persistRequest(Request $request)
     {
         return $request->headers->all();
     }
@@ -399,7 +399,7 @@ private function persistRequest(Request $request)
      *
      * @return array An array of HTTP headers
      */
-    private function persistResponse(Response $response)
+    protected function persistResponse(Response $response)
     {
         $headers = $response->headers->all();
         $headers['X-Status'] = array($response->getStatusCode());
@@ -415,7 +415,7 @@ private function persistResponse(Response $response)
      *
      * @return Response
      */
-    private function restoreResponse($headers, $body = null)
+    protected function restoreResponse($headers, $body = null)
     {
         $status = $headers['X-Status'][0];
         unset($headers['X-Status']);