diff --git a/pom.xml b/pom.xml
index 4939e08e2..ff98abf0d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -73,7 +73,7 @@
             **/generated/**/*
         </sonar.exclusions>
 
-        <powsybl-core.version>6.5.0</powsybl-core.version>
+        <powsybl-core.version>6.6.0-RC1</powsybl-core.version>
 
     </properties>