diff --git a/mongodb/mongodb.php b/mongodb/mongodb.php
index b39330a6..745def62 100644
--- a/mongodb/mongodb.php
+++ b/mongodb/mongodb.php
@@ -2409,26 +2409,6 @@ namespace MongoDB {}
             {
             }
 
-            /**
-             * Returns the increment component of this TimestampInterface
-             *
-             * @link https://secure.php.net/manual/en/mongodb-bson-timestampinterface.getincrement.php
-             * @return int
-             */
-            final public function getIncrement()
-            {
-            }
-
-            /**
-             * Returns the timestamp component of this TimestampInterface
-             *
-             * @link https://secure.php.net/manual/en/mongodb-bson-timestampinterface.gettimestamp.php
-             * @return int
-             */
-            final public function getTimestamp()
-            {
-            }
-
             /**
              * Serialize a UTCDateTime
              * @since 1.2.0