Releasing 2.3.1

Change-Id: Ia8d50696437f5325bcc8c2b1ee8ca41a64f5b61d
diff --git a/model/pom.xml b/model/pom.xml
index 2e516bc..ffa731a 100644
--- a/model/pom.xml
+++ b/model/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.onosproject</groupId>
         <artifactId>onos-yang-tools</artifactId>
-        <version>2.4-SNAPSHOT</version>
+        <version>2.3.1</version>
     </parent>
 
     <artifactId>onos-yang-model</artifactId>