diff --git a/build.properties b/build.properties
index a2498df5..54376951 100644
--- a/build.properties
+++ b/build.properties
@@ -15,7 +15,7 @@ test.result.dir=${target.dir}/test-results
 user.name=myui
 #java.version=1.6
 
-project.version=0.4.0
+project.version=0.4.0-1
 project.name=Hivemall
 project.groupId=hivemall
 project.organization.name=Treasure Data, Inc.
diff --git a/pom.xml b/pom.xml
index a3fa7087..0d1b9127 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
 	<groupId>io.github.myui</groupId>
 	<artifactId>hivemall</artifactId>
-	<version>0.4.0</version>
+	<version>0.4.0-1</version>
 
 	<name>Hivemall</name>
 	<description>Scalable Machine Learning Library for Apache Hive</description>
diff --git a/src/main/java/hivemall/HivemallConstants.java b/src/main/java/hivemall/HivemallConstants.java
index bab3eda9..11f33335 100644
--- a/src/main/java/hivemall/HivemallConstants.java
+++ b/src/main/java/hivemall/HivemallConstants.java
@@ -20,7 +20,7 @@
 
 public final class HivemallConstants {
 
-    public static final String VERSION = "0.4.0";
+    public static final String VERSION = "0.4.0-1";
 
     public static final String BIAS_CLAUSE = "0";
     public static final String CONFKEY_RAND_AMPLIFY_SEED = "hivemall.amplify.seed";