diff --git a/API/pom.xml b/API/pom.xml
index 141e84e..c3bdcd6 100644
--- a/API/pom.xml
+++ b/API/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.github.crawler-commons</groupId>
 		<artifactId>urlfrontier</artifactId>
-		<version>2.4-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 
 	<name>urlfrontier-API</name>
diff --git a/client/pom.xml b/client/pom.xml
index 54a99fb..6f60ea9 100644
--- a/client/pom.xml
+++ b/client/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.github.crawler-commons</groupId>
 		<artifactId>urlfrontier</artifactId>
-		<version>2.4-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 
 	<name>urlfrontier-client</name>
diff --git a/pom.xml b/pom.xml
index 0a490b4..89bcf4f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 	<groupId>com.github.crawler-commons</groupId>
 	<artifactId>urlfrontier</artifactId>
 	<packaging>pom</packaging>
-	<version>2.4-SNAPSHOT</version>
+	<version>2.3.1</version>
 	<name>urlfrontier</name>
 
 	<url>https://github.com/crawler-commons/url-frontier</url>
@@ -24,7 +24,7 @@
 		<url>https://github.com/crawler-commons/url-frontier</url>
 		<connection>scm:git:git://github.com/crawler-commons/url-frontier.git</connection>
 		<developerConnection>scm:git:git@github.com:crawler-commons/url-frontier.git</developerConnection>
-		<tag>HEAD</tag>
+		<tag>2.3.1</tag>
 	</scm>
 
 	<distributionManagement>
diff --git a/service/pom.xml b/service/pom.xml
index 02efc58..a48ed37 100644
--- a/service/pom.xml
+++ b/service/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.github.crawler-commons</groupId>
 		<artifactId>urlfrontier</artifactId>
-		<version>2.4-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 
 	<name>urlfrontier-service</name>
diff --git a/tests/pom.xml b/tests/pom.xml
index 52ecf07..96ce04b 100644
--- a/tests/pom.xml
+++ b/tests/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.github.crawler-commons</groupId>
 		<artifactId>urlfrontier</artifactId>
-		<version>2.4-SNAPSHOT</version>
+		<version>2.3.1</version>
 	</parent>
 
 	<name>urlfrontier-test-suite</name>