diff --git a/pom.xml b/pom.xml
index 330b383..8646340 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,7 +13,7 @@
     <parent>
         <groupId>com.powsybl</groupId>
         <artifactId>powsybl-parent-ws</artifactId>
-        <version>15</version>
+        <version>20</version>
         <relativePath/>
     </parent>
 
@@ -42,7 +42,7 @@
     </developers>
 
     <properties>
-        <gridsuite-dependencies.version>31</gridsuite-dependencies.version>
+        <gridsuite-dependencies.version>33</gridsuite-dependencies.version>
     </properties>
 
     <build>