diff --git a/HISTORY b/HISTORY
index a385ae3..272e9c3 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,4 +1,9 @@
 
+Version 1.28  2019-12-30
+  * support connection pool. you can use connection pool or a short connection.
+    configuration items please see fdfs_client.conf and client.properties
+  * you must upgrade your FastDFS server to V6.06 or higher version
+
 Version 1.27  2019-11-11
   * StorageClient add function: regenerate_filename for appender file
     StorageClient1 add function: regenerate_filename1 for appender file
diff --git a/pom.xml b/pom.xml
index 7485dc4..2277a52 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
   <groupId>org.csource</groupId>
   <artifactId>fastdfs-client-java</artifactId>
-  <version>1.27-SNAPSHOT</version>
+  <version>1.28-SNAPSHOT</version>
   <name>fastdfs-client-java</name>
   <description>fastdfs client for java</description>
   <packaging>jar</packaging>