diff --git a/pmml-xgboost-example/pom.xml b/pmml-xgboost-example/pom.xml
index 063d084..de6815a 100644
--- a/pmml-xgboost-example/pom.xml
+++ b/pmml-xgboost-example/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.jpmml</groupId>
 		<artifactId>jpmml-xgboost</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 	</parent>
 
 	<groupId>org.jpmml</groupId>
diff --git a/pmml-xgboost/pom.xml b/pmml-xgboost/pom.xml
index 1b13278..ea8dbc6 100644
--- a/pmml-xgboost/pom.xml
+++ b/pmml-xgboost/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.jpmml</groupId>
 		<artifactId>jpmml-xgboost</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 	</parent>
 
 	<groupId>org.jpmml</groupId>
diff --git a/pom.xml b/pom.xml
index 9a73ef5..a73ca4b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
 
 	<groupId>org.jpmml</groupId>
 	<artifactId>jpmml-xgboost</artifactId>
-	<version>1.6-SNAPSHOT</version>
+	<version>1.6.4</version>
 	<packaging>pom</packaging>
 
 	<name>JPMML-XGBoost</name>
@@ -41,7 +41,7 @@
 		<connection>scm:git:git@github.com:jpmml/jpmml-xgboost.git</connection>
 		<developerConnection>scm:git:git@github.com:jpmml/jpmml-xgboost.git</developerConnection>
 		<url>git://github.com/jpmml/jpmml-xgboost.git</url>
-		<tag>HEAD</tag>
+		<tag>1.6.4</tag>
 	</scm>
 	<issueManagement>
 		<system>GitHub</system>
@@ -53,12 +53,12 @@
 			<dependency>
 				<groupId>org.jpmml</groupId>
 				<artifactId>pmml-xgboost</artifactId>
-				<version>1.6-SNAPSHOT</version>
+				<version>1.6.4</version>
 			</dependency>
 			<dependency>
 				<groupId>org.jpmml</groupId>
 				<artifactId>pmml-xgboost-example</artifactId>
-				<version>1.6-SNAPSHOT</version>
+				<version>1.6.4</version>
 			</dependency>
 
 			<dependency>