diff --git a/open-reac/pom.xml b/open-reac/pom.xml
index eb26952a..83cd6579 100644
--- a/open-reac/pom.xml
+++ b/open-reac/pom.xml
@@ -13,7 +13,7 @@
     <parent>
         <groupId>com.powsybl</groupId>
         <artifactId>powsybl-optimizer</artifactId>
-        <version>0.8.0</version>
+        <version>0.9.0-SNAPSHOT</version>
     </parent>
 
     <packaging>jar</packaging>
diff --git a/pom.xml b/pom.xml
index bed22a30..46887e6d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
     </parent>
 
     <artifactId>powsybl-optimizer</artifactId>
-    <version>0.8.0</version>
+    <version>0.9.0-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <name>PowSyBl Optimizer</name>