diff --git a/pom.xml b/pom.xml
index d2ce02c..26e3973 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
     </parent>
 
     <artifactId>powsybl-ws-commons</artifactId>
-    <version>1.20.0</version>
+    <version>1.21.0-SNAPSHOT</version>
     <name>powsybl ws commons</name>
     <description>Powsybl WS commons</description>