diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 01b28f2..99a4f14 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,7 +1,7 @@
 [versions]
-egl = "0.9.8"
-kolasu = "1.5.59"
-rpg = "2.1.52"
+egl = "0.9.9"
+kolasu = "1.5.61-SNAPSHOT"
+rpg = "2.1.55"
 javamodule = "0.9.19"
 
 [plugins]
diff --git a/lionweb-client/src/main/kotlin/com/strumenta/lwrepoclient/base/LionWebClient.kt b/lionweb-client/src/main/kotlin/com/strumenta/lwrepoclient/base/LionWebClient.kt
index 8c8fbd7..d058b91 100644
--- a/lionweb-client/src/main/kotlin/com/strumenta/lwrepoclient/base/LionWebClient.kt
+++ b/lionweb-client/src/main/kotlin/com/strumenta/lwrepoclient/base/LionWebClient.kt
@@ -613,6 +613,18 @@ class LionWebClient(
         return lwNode.getChildren(containment).map { it.id!! }
     }
 
+    fun clearContainment(
+        containerId: String,
+        containmentName: String,
+    ) {
+        val lwNode = retrieve(containerId, retrievalMode = RetrievalMode.SINGLE_NODE)
+        val containment = lwNode.classifier.getContainmentByName(containmentName) ?: throw java.lang.IllegalStateException()
+        lwNode.getChildren(containment).forEach {
+            lwNode.removeChild(it)
+        }
+        storeTree(lwNode)
+    }
+
     // Private methods
 
     private var httpClient: OkHttpClient =