diff --git a/src/Composer/Package/RootPackageInterface.php b/src/Composer/Package/RootPackageInterface.php
index 32cc44750..14f80ae13 100644
--- a/src/Composer/Package/RootPackageInterface.php
+++ b/src/Composer/Package/RootPackageInterface.php
@@ -113,15 +113,6 @@ interface RootPackageInterface extends CompletePackageInterface
      */
     public function setReplaces(array $replaces);
 
-    /**
-     * Set the repositories
-     *
-     * @param mixed[] $repositories
-     *
-     * @return void
-     */
-    public function setRepositories(array $repositories);
-
     /**
      * Set the autoload mapping
      *