diff --git a/Uri/UriInterface.php b/Uri/UriInterface.php
index 8be075531..1950e3efd 100644
--- a/Uri/UriInterface.php
+++ b/Uri/UriInterface.php
@@ -117,6 +117,17 @@ interface UriInterface
      */
     public function getRootPath() : string;
 
+    /**
+     * Set root path.
+     *
+     * @param string $uri Uri
+     *
+     * @return void
+     *
+     * @since  1.0.0
+     */
+    public function setRootPath(string $root) /* : void */;
+
     /**
      * Get path element.
      *
@@ -202,5 +213,5 @@ interface UriInterface
      *
      * @since  1.0.0
      */
-    public function set(string $uri);
+    public function set(string $uri) /* : void */;
 }