diff --git a/Hadoop-Benchmark.md b/Hadoop-Benchmark.md
index c9e6b00..18277f4 100644
--- a/Hadoop-Benchmark.md
+++ b/Hadoop-Benchmark.md
@@ -26,7 +26,7 @@ Then get the seaweedfs hadoop client jar.
 
 ```
 cd share/hadoop/common/lib/
-wget https://oss.sonatype.org/service/local/repositories/releases/content/com/github/chrislusf/seaweedfs-hadoop2-client/1.5.4/seaweedfs-hadoop2-client-1.5.4.jar
+wget https://oss.sonatype.org/service/local/repositories/releases/content/com/github/chrislusf/seaweedfs-hadoop2-client/1.5.6/seaweedfs-hadoop2-client-1.5.6.jar
 ```
 
 # TestDFSIO Benchmark
diff --git a/Hadoop-Compatible-File-System.md b/Hadoop-Compatible-File-System.md
index 66d089a..05ab70e 100644
--- a/Hadoop-Compatible-File-System.md
+++ b/Hadoop-Compatible-File-System.md
@@ -10,12 +10,12 @@ $ mvn install
 # build for hadoop2
 $cd $GOPATH/src/github.com/chrislusf/seaweedfs/other/java/hdfs2
 $ mvn package
-$ ls -al target/seaweedfs-hadoop2-client-1.5.4.jar
+$ ls -al target/seaweedfs-hadoop2-client-1.5.6.jar
 
 # build for hadoop3
 $cd $GOPATH/src/github.com/chrislusf/seaweedfs/other/java/hdfs3
 $ mvn package
-$ ls -al target/seaweedfs-hadoop3-client-1.5.4.jar
+$ ls -al target/seaweedfs-hadoop3-client-1.5.6.jar
 
 ```
 Maven
@@ -23,7 +23,7 @@ Maven
 <dependency>
   <groupId>com.github.chrislusf</groupId>
   <artifactId>seaweedfs-hadoop3-client</artifactId>
-  <version>1.5.4</version>
+  <version>1.5.6</version>
 </dependency>
 
 or 
@@ -31,23 +31,23 @@ or
 <dependency>
   <groupId>com.github.chrislusf</groupId>
   <artifactId>seaweedfs-hadoop2-client</artifactId>
-  <version>1.5.4</version>
+  <version>1.5.6</version>
 </dependency>
 
 ```
 
 Or you can download the latest version from MavenCentral
 * https://mvnrepository.com/artifact/com.github.chrislusf/seaweedfs-hadoop2-client
-  * [seaweedfs-hadoop2-client-1.5.4.jar](https://oss.sonatype.org/service/local/repositories/releases/content/com/github/chrislusf/seaweedfs-hadoop2-client/1.5.4/seaweedfs-hadoop2-client-1.5.4.jar)
+  * [seaweedfs-hadoop2-client-1.5.6.jar](https://oss.sonatype.org/service/local/repositories/releases/content/com/github/chrislusf/seaweedfs-hadoop2-client/1.5.6/seaweedfs-hadoop2-client-1.5.6.jar)
 * https://mvnrepository.com/artifact/com.github.chrislusf/seaweedfs-hadoop3-client
-  * [seaweedfs-hadoop3-client-1.5.4.jar](https://oss.sonatype.org/service/local/repositories/releases/content/com/github/chrislusf/seaweedfs-hadoop3-client/1.5.4/seaweedfs-hadoop3-client-1.5.4.jar)
+  * [seaweedfs-hadoop3-client-1.5.6.jar](https://oss.sonatype.org/service/local/repositories/releases/content/com/github/chrislusf/seaweedfs-hadoop3-client/1.5.6/seaweedfs-hadoop3-client-1.5.6.jar)
 
 # Test SeaweedFS on Hadoop
 
 Suppose you are getting a new Hadoop installation. Here are the minimum steps to get SeaweedFS to run.
 
-You would need to start a weed filer first, build the seaweedfs-hadoop2-client-1.5.4.jar 
-or seaweedfs-hadoop3-client-1.5.4.jar, and do the following:
+You would need to start a weed filer first, build the seaweedfs-hadoop2-client-1.5.6.jar 
+or seaweedfs-hadoop3-client-1.5.6.jar, and do the following:
 
 ```
 # optionally adjust hadoop memory allocation
@@ -60,12 +60,12 @@ $ echo "<configuration></configuration>" > etc/hadoop/mapred-site.xml
 # on hadoop2
 $ bin/hdfs dfs -Dfs.defaultFS=seaweedfs://localhost:8888 \
                -Dfs.seaweedfs.impl=seaweed.hdfs.SeaweedFileSystem \
-               -libjars ./seaweedfs-hadoop2-client-1.5.4.jar \
+               -libjars ./seaweedfs-hadoop2-client-1.5.6.jar \
                -ls /
 # or on hadoop3
 $ bin/hdfs dfs -Dfs.defaultFS=seaweedfs://localhost:8888 \
                -Dfs.seaweedfs.impl=seaweed.hdfs.SeaweedFileSystem \
-               -libjars ./seaweedfs-hadoop3-client-1.5.4.jar \
+               -libjars ./seaweedfs-hadoop3-client-1.5.6.jar \
                -ls /
 
 ```
@@ -106,9 +106,9 @@ $ bin/hadoop classpath
 # Copy SeaweedFS HDFS client jar to one of the folders
 $ cd ${HADOOP_HOME}
 # for hadoop2
-$ cp ./seaweedfs-hadoop2-client-1.5.4.jar share/hadoop/common/lib/
+$ cp ./seaweedfs-hadoop2-client-1.5.6.jar share/hadoop/common/lib/
 # or for hadoop3
-$ cp ./seaweedfs-hadoop3-client-1.5.4.jar share/hadoop/common/lib/
+$ cp ./seaweedfs-hadoop3-client-1.5.6.jar share/hadoop/common/lib/
 ```
 
 Now you can do this:
diff --git a/run-HBase-on-SeaweedFS.md b/run-HBase-on-SeaweedFS.md
index 10220af..5e697a6 100644
--- a/run-HBase-on-SeaweedFS.md
+++ b/run-HBase-on-SeaweedFS.md
@@ -1,7 +1,7 @@
 # Installation for HBase
 
 Two steps to run HBase on SeaweedFS
-1. Copy the seaweedfs-hadoop2-client-1.5.4.jar to `${HBASE_HOME}/lib`
+1. Copy the seaweedfs-hadoop2-client-1.5.6.jar to `${HBASE_HOME}/lib`
 1. And add the following 2 properties in `${HBASE_HOME}/conf/hbase-site.xml`
 
 ```
diff --git a/run-Spark-on-SeaweedFS.md b/run-Spark-on-SeaweedFS.md
index 527a4e4..443e4ff 100644
--- a/run-Spark-on-SeaweedFS.md
+++ b/run-Spark-on-SeaweedFS.md
@@ -11,12 +11,12 @@ To make these files visible to Spark, set HADOOP_CONF_DIR in $SPARK_HOME/conf/sp
 
 ## installation not inheriting from Hadoop cluster configuration
 
-Copy the seaweedfs-hadoop2-client-1.5.4.jar to all executor machines.
+Copy the seaweedfs-hadoop2-client-1.5.6.jar to all executor machines.
 
 Add the following to spark/conf/spark-defaults.conf on every node running Spark
 ```
-spark.driver.extraClassPath=/path/to/seaweedfs-hadoop2-client-1.5.4.jar
-spark.executor.extraClassPath=/path/to/seaweedfs-hadoop2-client-1.5.4.jar
+spark.driver.extraClassPath=/path/to/seaweedfs-hadoop2-client-1.5.6.jar
+spark.executor.extraClassPath=/path/to/seaweedfs-hadoop2-client-1.5.6.jar
 ```
 
 And modify the configuration at runtime:
@@ -37,8 +37,8 @@ And modify the configuration at runtime:
   1. change the spark-defaults.conf
 
 ```
-spark.driver.extraClassPath=/Users/chris/go/src/github.com/chrislusf/seaweedfs/other/java/hdfs2/target/seaweedfs-hadoop2-client-1.5.4.jar
-spark.executor.extraClassPath=/Users/chris/go/src/github.com/chrislusf/seaweedfs/other/java/hdfs2/target/seaweedfs-hadoop2-client-1.5.4.jar
+spark.driver.extraClassPath=/Users/chris/go/src/github.com/chrislusf/seaweedfs/other/java/hdfs2/target/seaweedfs-hadoop2-client-1.5.6.jar
+spark.executor.extraClassPath=/Users/chris/go/src/github.com/chrislusf/seaweedfs/other/java/hdfs2/target/seaweedfs-hadoop2-client-1.5.6.jar
 spark.hadoop.fs.seaweedfs.impl=seaweed.hdfs.SeaweedFileSystem
 ```
 
@@ -81,8 +81,8 @@ spark.history.fs.cleaner.enabled=true
 spark.history.fs.logDirectory=seaweedfs://localhost:8888/spark2-history/
 spark.eventLog.dir=seaweedfs://localhost:8888/spark2-history/
 
-spark.driver.extraClassPath=/Users/chris/go/src/github.com/chrislusf/seaweedfs/other/java/hdfs2/target/seaweedfs-hadoop2-client-1.5.4.jar
-spark.executor.extraClassPath=/Users/chris/go/src/github.com/chrislusf/seaweedfs/other/java/hdfs2/target/seaweedfs-hadoop2-client-1.5.4.jar
+spark.driver.extraClassPath=/Users/chris/go/src/github.com/chrislusf/seaweedfs/other/java/hdfs2/target/seaweedfs-hadoop2-client-1.5.6.jar
+spark.executor.extraClassPath=/Users/chris/go/src/github.com/chrislusf/seaweedfs/other/java/hdfs2/target/seaweedfs-hadoop2-client-1.5.6.jar
 spark.hadoop.fs.seaweedfs.impl=seaweed.hdfs.SeaweedFileSystem
 spark.hadoop.fs.defaultFS=seaweedfs://localhost:8888
 ```