diff --git a/API/pom.xml b/API/pom.xml
index 34bd331..2ba2fee 100644
--- a/API/pom.xml
+++ b/API/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.github.crawler-commons</groupId>
 		<artifactId>urlfrontier</artifactId>
-		<version>3.4</version>
+		<version>2.4</version>
 	</parent>
 
 	<name>urlfrontier-API</name>
diff --git a/client/pom.xml b/client/pom.xml
index fbdb99e..07c03ba 100644
--- a/client/pom.xml
+++ b/client/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.github.crawler-commons</groupId>
 		<artifactId>urlfrontier</artifactId>
-		<version>3.4</version>
+		<version>2.4</version>
 	</parent>
 
 	<name>urlfrontier-client</name>
diff --git a/pom.xml b/pom.xml
index 3b7102b..10b72cd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 	<groupId>com.github.crawler-commons</groupId>
 	<artifactId>urlfrontier</artifactId>
 	<packaging>pom</packaging>
-	<version>3.4</version>
+	<version>2.4</version>
 	<name>urlfrontier</name>
 
 	<url>https://github.com/crawler-commons/url-frontier</url>
diff --git a/service/pom.xml b/service/pom.xml
index 73de052..632deeb 100644
--- a/service/pom.xml
+++ b/service/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.github.crawler-commons</groupId>
 		<artifactId>urlfrontier</artifactId>
-		<version>3.4</version>
+		<version>2.4</version>
 	</parent>
 
 	<name>urlfrontier-service</name>
diff --git a/tests/pom.xml b/tests/pom.xml
index 2277d18..fc3ba55 100644
--- a/tests/pom.xml
+++ b/tests/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.github.crawler-commons</groupId>
 		<artifactId>urlfrontier</artifactId>
-		<version>3.4</version>
+		<version>2.4</version>
 	</parent>
 
 	<name>urlfrontier-test-suite</name>