diff --git a/spring-cloud-gateway.xml b/spring-cloud-gateway.xml
index 14aa8d17..2ebd5e73 100644
--- a/spring-cloud-gateway.xml
+++ b/spring-cloud-gateway.xml
@@ -4,7 +4,7 @@
 <book xmlns="http://docbook.org/ns/docbook" xmlns:xl="http://www.w3.org/1999/xlink" version="5.0" xml:lang="en">
 <info>
 <title>Spring Cloud Gateway</title>
-<date>2018-05-20</date>
+<date>2018-05-21</date>
 </info>
 <preface>
 <title></title>