diff --git a/htrace-c/pom.xml b/htrace-c/pom.xml
index 741eea4..67a62b4 100644
--- a/htrace-c/pom.xml
+++ b/htrace-c/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <artifactId>htrace</artifactId>
     <groupId>org.apache.htrace</groupId>
-    <version>4.2.0</version>
+    <version>4.2.0-incubating</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/htrace-core4/pom.xml b/htrace-core4/pom.xml
index e8a61fe..bf8bd39 100644
--- a/htrace-core4/pom.xml
+++ b/htrace-core4/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <artifactId>htrace</artifactId>
     <groupId>org.apache.htrace</groupId>
-    <version>4.2.0</version>
+    <version>4.2.0-incubating</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/htrace-flume/pom.xml b/htrace-flume/pom.xml
index d286ff2..5348c5e 100644
--- a/htrace-flume/pom.xml
+++ b/htrace-flume/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <artifactId>htrace</artifactId>
     <groupId>org.apache.htrace</groupId>
-    <version>4.2.0</version>
+    <version>4.2.0-incubating</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/htrace-hbase/pom.xml b/htrace-hbase/pom.xml
index a4421a9..4bffb8f 100644
--- a/htrace-hbase/pom.xml
+++ b/htrace-hbase/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <artifactId>htrace</artifactId>
     <groupId>org.apache.htrace</groupId>
-    <version>4.2.0</version>
+    <version>4.2.0-incubating</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/htrace-htraced/pom.xml b/htrace-htraced/pom.xml
index d110305..51293dd 100644
--- a/htrace-htraced/pom.xml
+++ b/htrace-htraced/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <artifactId>htrace</artifactId>
     <groupId>org.apache.htrace</groupId>
-    <version>4.2.0</version>
+    <version>4.2.0-incubating</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/htrace-webapp/pom.xml b/htrace-webapp/pom.xml
index ae9fb9c..eaf66b5 100644
--- a/htrace-webapp/pom.xml
+++ b/htrace-webapp/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <artifactId>htrace</artifactId>
     <groupId>org.apache.htrace</groupId>
-    <version>4.2.0</version>
+    <version>4.2.0-incubating</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/htrace-zipkin/pom.xml b/htrace-zipkin/pom.xml
index 485f24a..125c623 100644
--- a/htrace-zipkin/pom.xml
+++ b/htrace-zipkin/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <artifactId>htrace</artifactId>
     <groupId>org.apache.htrace</groupId>
-    <version>4.2.0</version>
+    <version>4.2.0-incubating</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/pom.xml b/pom.xml
index 56fc8a6..ecd665c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
 
   <groupId>org.apache.htrace</groupId>
   <artifactId>htrace</artifactId>
-  <version>4.2.0</version>
+  <version>4.2.0-incubating</version>
   <packaging>pom</packaging>
   <name>Apache HTrace</name>
   <description>A distributed tracing framework.</description>