diff --git a/CRM/Extension/Browser.php b/CRM/Extension/Browser.php
index 2d40f687238c..457ced70d779 100644
--- a/CRM/Extension/Browser.php
+++ b/CRM/Extension/Browser.php
@@ -216,7 +216,7 @@ private function _discoverRemote() {
    * @return string
    */
   private function grabCachedJson() {
-    $filename = $this->cacheDir . DIRECTORY_SEPARATOR . self::CACHE_JSON_FILE;
+    $filename = $this->cacheDir . DIRECTORY_SEPARATOR . self::CACHE_JSON_FILE . '.' . md5($this->getRepositoryUrl());
     $json = file_get_contents($filename);
     if (empty($json)) {
       $json = $this->grabRemoteJson();
@@ -246,7 +246,7 @@ private function grabRemoteJson() {
       return array();
     }
 
-    $filename = $this->cacheDir . DIRECTORY_SEPARATOR . self::CACHE_JSON_FILE;
+    $filename = $this->cacheDir . DIRECTORY_SEPARATOR . self::CACHE_JSON_FILE . '.' . md5($this->getRepositoryUrl());
     $url = $this->getRepositoryUrl() . $this->indexPath;
     $status = CRM_Utils_HttpClient::singleton()->fetch($url, $filename);