diff --git a/HISTORY b/HISTORY
index 272e9c3..1d26881 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,4 +1,10 @@
 
+Version 1.29  2020-01-03
+  * support active test for connection pool.
+    when the tracker / storage server restarts or the network burst failure
+    occurs, only one request will be sacrificed (failed), the rest of
+    the connections in the pool will be enabled to active test for validation.
+
 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
diff --git a/pom.xml b/pom.xml
index 2277a52..714c787 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
   <groupId>org.csource</groupId>
   <artifactId>fastdfs-client-java</artifactId>
-  <version>1.28-SNAPSHOT</version>
+  <version>1.29-SNAPSHOT</version>
   <name>fastdfs-client-java</name>
   <description>fastdfs client for java</description>
   <packaging>jar</packaging>