diff --git a/src/UriInterface.php b/src/UriInterface.php
index 6ece804..2ed8922 100644
--- a/src/UriInterface.php
+++ b/src/UriInterface.php
@@ -295,7 +295,7 @@ public function withFragment($fragment);
      * Return the string representation as a URI reference.
      *
      * Depending on which components of the URI are present, the resulting
-     * string is either a full URI or relative reference according to RFC 3985,
+     * string is either a full URI or relative reference according to RFC 3986,
      * Section 4.1. The method concatenates the various components of the URI,
      * using the appropriate delimiters:
      *