diff --git a/pom.xml b/pom.xml
index 1cf00018..46b60e84 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
         <version>7</version>
     </parent>
     <groupId>us.codecraft</groupId>
-    <version>0.6.0</version>
+    <version>0.6.1-SNAPSHOT</version>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
     <properties>
diff --git a/release.properties b/release.properties
deleted file mode 100644
index 198144c5..00000000
--- a/release.properties
+++ /dev/null
@@ -1,24 +0,0 @@
-#release configuration
-#Thu Jan 21 19:19:07 CST 2016
-scm.commentPrefix=[maven-release-plugin] 
-pushChanges=true
-project.dev.us.codecraft\:webmagic-extension=0.5.4-SNAPSHOT
-project.scm.us.codecraft\:webmagic-parent.developerConnection=scm\:git\:git@github.com\:code4craft/webmagic.git
-project.rel.us.codecraft\:webmagic-core=0.5.3
-project.rel.us.codecraft\:webmagic-extension=0.5.3
-project.rel.us.codecraft\:webmagic-parent=0.5.3
-scm.tag=webmagic-parent-0.5.3
-remoteTagging=true
-project.scm.us.codecraft\:webmagic-parent.tag=webmagic-parent-0.5.3
-exec.additionalArguments=-Psonatype-oss-release -P development
-project.dev.us.codecraft\:webmagic-core=0.5.4-SNAPSHOT
-scm.url=scm\:git\:git@github.com\:code4craft/webmagic.git
-scm.tagNameFormat=@{project.artifactId}-@{project.version}
-project.scm.us.codecraft\:webmagic-extension.empty=true
-project.scm.us.codecraft\:webmagic-parent.url=git@github.com\:code4craft/webmagic.git
-preparationGoals=clean verify
-project.scm.us.codecraft\:webmagic-core.empty=true
-project.scm.us.codecraft\:webmagic-parent.connection=scm\:git\:git@github.com\:code4craft/webmagic.git
-exec.snapshotReleasePluginAllowed=false
-project.dev.us.codecraft\:webmagic-parent=0.5.4-SNAPSHOT
-completedPhase=end-release
diff --git a/webmagic-core/pom.xml b/webmagic-core/pom.xml
index 570a58a8..d789539a 100644
--- a/webmagic-core/pom.xml
+++ b/webmagic-core/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>us.codecraft</groupId>
         <artifactId>webmagic-parent</artifactId>
-        <version>0.6.0</version>
+        <version>0.6.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webmagic-core/pom.xml.releaseBackup b/webmagic-core/pom.xml.releaseBackup
deleted file mode 100644
index 7bf25318..00000000
--- a/webmagic-core/pom.xml.releaseBackup
+++ /dev/null
@@ -1,86 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <parent>
-        <groupId>us.codecraft</groupId>
-        <artifactId>webmagic-parent</artifactId>
-        <version>0.5.3-SNAPSHOT</version>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
-
-    <artifactId>webmagic-core</artifactId>
-
-    <dependencies>
-        <dependency>
-            <groupId>org.apache.httpcomponents</groupId>
-            <artifactId>httpclient</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>us.codecraft</groupId>
-            <artifactId>xsoup</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>com.github.dreamhead</groupId>
-            <artifactId>moco-core</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-api</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-log4j12</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>commons-collections</groupId>
-            <artifactId>commons-collections</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.jsoup</groupId>
-            <artifactId>jsoup</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-io</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>com.jayway.jsonpath</groupId>
-            <artifactId>json-path</artifactId>
-            <version>0.8.1</version>
-        </dependency>
-
-        <dependency>
-            <groupId>com.alibaba</groupId>
-            <artifactId>fastjson</artifactId>
-        </dependency>
-
-    </dependencies>
-
-</project>
\ No newline at end of file
diff --git a/webmagic-extension/pom.xml b/webmagic-extension/pom.xml
index 6a4f7e76..76ee2d99 100644
--- a/webmagic-extension/pom.xml
+++ b/webmagic-extension/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>us.codecraft</groupId>
         <artifactId>webmagic-parent</artifactId>
-        <version>0.6.0</version>
+        <version>0.6.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webmagic-extension/pom.xml.releaseBackup b/webmagic-extension/pom.xml.releaseBackup
deleted file mode 100644
index 2060e35d..00000000
--- a/webmagic-extension/pom.xml.releaseBackup
+++ /dev/null
@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <parent>
-        <groupId>us.codecraft</groupId>
-        <artifactId>webmagic-parent</artifactId>
-        <version>0.5.3-SNAPSHOT</version>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
-
-    <artifactId>webmagic-extension</artifactId>
-
-    <dependencies>
-        <dependency>
-            <groupId>redis.clients</groupId>
-            <artifactId>jedis</artifactId>
-            <version>2.0.0</version>
-        </dependency>
-        <dependency>
-            <groupId>us.codecraft</groupId>
-            <artifactId>webmagic-core</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-        </dependency>
-    </dependencies>
-
-</project>
\ No newline at end of file
diff --git a/webmagic-samples/pom.xml b/webmagic-samples/pom.xml
index 75b2d607..8ac4d5ba 100644
--- a/webmagic-samples/pom.xml
+++ b/webmagic-samples/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>webmagic-parent</artifactId>
         <groupId>us.codecraft</groupId>
-        <version>0.6.0</version>
+        <version>0.6.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webmagic-saxon/pom.xml b/webmagic-saxon/pom.xml
index 36adfde3..bfbe4e37 100644
--- a/webmagic-saxon/pom.xml
+++ b/webmagic-saxon/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>webmagic-parent</artifactId>
         <groupId>us.codecraft</groupId>
-        <version>0.6.0</version>
+        <version>0.6.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webmagic-scripts/pom.xml b/webmagic-scripts/pom.xml
index d010ad5a..6095a571 100755
--- a/webmagic-scripts/pom.xml
+++ b/webmagic-scripts/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>webmagic-parent</artifactId>
         <groupId>us.codecraft</groupId>
-        <version>0.6.0</version>
+        <version>0.6.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webmagic-selenium/pom.xml b/webmagic-selenium/pom.xml
index f1faa70c..fdd5dfb9 100644
--- a/webmagic-selenium/pom.xml
+++ b/webmagic-selenium/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<artifactId>webmagic-parent</artifactId>
 		<groupId>us.codecraft</groupId>
-		<version>0.6.0</version>
+		<version>0.6.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>