diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/GanttEventProcessor.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/GanttEventProcessor.java
index 5754d5dff7..0db7501772 100644
--- a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/GanttEventProcessor.java
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/GanttEventProcessor.java
@@ -12,13 +12,19 @@
  *******************************************************************************/
 package org.eclipse.sirius.components.collaborative.gantt;
 
+import java.util.List;
 import java.util.Objects;
+import java.util.Optional;
 import java.util.concurrent.atomic.AtomicReference;
 
 import org.eclipse.sirius.components.collaborative.api.ChangeDescription;
 import org.eclipse.sirius.components.collaborative.api.ChangeKind;
 import org.eclipse.sirius.components.collaborative.api.ISubscriptionManager;
+import org.eclipse.sirius.components.collaborative.dto.RenameRepresentationInput;
+import org.eclipse.sirius.components.collaborative.gantt.api.IGanttEventHandler;
 import org.eclipse.sirius.components.collaborative.gantt.api.IGanttEventProcessor;
+import org.eclipse.sirius.components.collaborative.gantt.api.IGanttInput;
+import org.eclipse.sirius.components.collaborative.gantt.dto.input.RenameGanttInput;
 import org.eclipse.sirius.components.collaborative.gantt.service.GanttCreationService;
 import org.eclipse.sirius.components.core.api.IEditingContext;
 import org.eclipse.sirius.components.core.api.IInput;
@@ -36,8 +42,8 @@
 import reactor.core.publisher.Sinks.One;
 
 /**
- * Reacts to the input that targets the gantt of a specific object and publishes updated versions of the
- * {@link Gantt} to interested subscribers.
+ * Reacts to the input that targets the gantt of a specific object and publishes updated versions of the {@link Gantt}
+ * to interested subscribers.
  *
  * @author lfasani
  */
@@ -57,12 +63,16 @@ public class GanttEventProcessor implements IGanttEventProcessor {
 
     private final GanttEventFlux ganttEventFlux;
 
-    public GanttEventProcessor(IEditingContext editingContext, Gantt ganttDiagram, ISubscriptionManager subscriptionManager, GanttCreationService ganttCreationService) {
+    private final List<IGanttEventHandler> ganttEventHandlers;
+
+    public GanttEventProcessor(IEditingContext editingContext, Gantt ganttDiagram, ISubscriptionManager subscriptionManager, GanttCreationService ganttCreationService,
+            List<IGanttEventHandler> ganttEventHandlers) {
         this.logger.trace("Creating the gantt event processor {}", ganttDiagram.getId());
 
         this.editingContext = Objects.requireNonNull(editingContext);
         this.subscriptionManager = Objects.requireNonNull(subscriptionManager);
         this.ganttCreationService = Objects.requireNonNull(ganttCreationService);
+        this.ganttEventHandlers = Objects.requireNonNull(ganttEventHandlers);
 
         // We automatically refresh the representation before using it since things may have changed since the moment it
         // has been saved in the database.
@@ -85,7 +95,21 @@ public ISubscriptionManager getSubscriptionManager() {
 
     @Override
     public void handle(One<IPayload> payloadSink, Many<ChangeDescription> changeDescriptionSink, IRepresentationInput representationInput) {
-        // TODO
+        IRepresentationInput effectiveInput = representationInput;
+        if (representationInput instanceof RenameRepresentationInput renameRepresentationInput) {
+            effectiveInput = new RenameGanttInput(renameRepresentationInput.id(), renameRepresentationInput.editingContextId(), renameRepresentationInput.representationId(),
+                    renameRepresentationInput.newLabel());
+        }
+        if (effectiveInput instanceof IGanttInput ganttInput) {
+            Optional<IGanttEventHandler> optionalGanttEventHandler = this.ganttEventHandlers.stream().filter(handler -> handler.canHandle(ganttInput)).findFirst();
+
+            if (optionalGanttEventHandler.isPresent()) {
+                IGanttEventHandler ganttEventHandler = optionalGanttEventHandler.get();
+                ganttEventHandler.handle(payloadSink, changeDescriptionSink, this.editingContext, this.currentGantt.get(), ganttInput);
+            } else {
+                this.logger.warn("No handler found for event: {}", ganttInput);
+            }
+        }
     }
 
     @Override
@@ -110,10 +134,7 @@ private boolean shouldRefresh(ChangeDescription changeDescription) {
 
     @Override
     public Flux<IPayload> getOutputEvents(IInput input) {
-        return Flux.merge(
-            this.ganttEventFlux.getFlux(input),
-            this.subscriptionManager.getFlux(input)
-        );
+        return Flux.merge(this.ganttEventFlux.getFlux(input), this.subscriptionManager.getFlux(input));
     }
 
     @Override
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/GanttEventProcessorFactory.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/GanttEventProcessorFactory.java
index 9c3583ed72..16045931df 100644
--- a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/GanttEventProcessorFactory.java
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/GanttEventProcessorFactory.java
@@ -12,6 +12,7 @@
  *******************************************************************************/
 package org.eclipse.sirius.components.collaborative.gantt;
 
+import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
 
@@ -20,6 +21,7 @@
 import org.eclipse.sirius.components.collaborative.api.IRepresentationEventProcessorFactory;
 import org.eclipse.sirius.components.collaborative.api.IRepresentationSearchService;
 import org.eclipse.sirius.components.collaborative.api.ISubscriptionManagerFactory;
+import org.eclipse.sirius.components.collaborative.gantt.api.IGanttEventHandler;
 import org.eclipse.sirius.components.collaborative.gantt.api.IGanttEventProcessor;
 import org.eclipse.sirius.components.collaborative.gantt.service.GanttCreationService;
 import org.eclipse.sirius.components.core.api.IEditingContext;
@@ -40,11 +42,14 @@ public class GanttEventProcessorFactory implements IRepresentationEventProcessor
 
     private final ISubscriptionManagerFactory subscriptionManagerFactory;
 
-    public GanttEventProcessorFactory(IRepresentationSearchService representationSearchService, GanttCreationService ganttCreationService,
-            ISubscriptionManagerFactory subscriptionManagerFactory) {
+    private final List<IGanttEventHandler> ganttEventHandlers;
+
+    public GanttEventProcessorFactory(IRepresentationSearchService representationSearchService, GanttCreationService ganttCreationService, ISubscriptionManagerFactory subscriptionManagerFactory,
+            List<IGanttEventHandler> ganttEventHandlers) {
         this.representationSearchService = Objects.requireNonNull(representationSearchService);
         this.ganttCreationService = Objects.requireNonNull(ganttCreationService);
         this.subscriptionManagerFactory = Objects.requireNonNull(subscriptionManagerFactory);
+        this.ganttEventHandlers = Objects.requireNonNull(ganttEventHandlers);
     }
 
     @Override
@@ -61,7 +66,7 @@ public <T extends IRepresentationEventProcessor> Optional<T> createRepresentatio
                 Gantt gantt = optionalGantt.get();
 
                 IRepresentationEventProcessor ganttEventProcessor = new GanttEventProcessor(editingContext, gantt,
-                        this.subscriptionManagerFactory.create(), this.ganttCreationService);
+                        this.subscriptionManagerFactory.create(), this.ganttCreationService, this.ganttEventHandlers);
 
                 return Optional.of(ganttEventProcessor)
                         .map(representationEventProcessorClass::cast);
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/dto/input/RenameGanttInput.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/dto/input/RenameGanttInput.java
new file mode 100644
index 0000000000..3dfb079af0
--- /dev/null
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/dto/input/RenameGanttInput.java
@@ -0,0 +1,25 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.collaborative.gantt.dto.input;
+
+import java.util.UUID;
+
+import org.eclipse.sirius.components.collaborative.gantt.api.IGanttInput;
+
+/**
+ * The input of the rename gantt mutation.
+ *
+ * @author lfasani
+ */
+public record RenameGanttInput(UUID id, String editingContextId, String representationId, String newLabel) implements IGanttInput {
+}
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/handlers/CreateGanttEventHandler.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/handlers/CreateGanttEventHandler.java
index 55ce624f7b..9032c8218e 100644
--- a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/handlers/CreateGanttEventHandler.java
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/handlers/CreateGanttEventHandler.java
@@ -60,10 +60,10 @@ public class CreateGanttEventHandler implements IEditingContextEventHandler {
     private final Counter counter;
 
     public CreateGanttEventHandler(IRepresentationDescriptionSearchService representationDescriptionSearchService, IRepresentationPersistenceService representationPersistenceService,
-            IGanttCreationService diagramCreationService, IObjectService objectService, ICollaborativeMessageService messageService, MeterRegistry meterRegistry) {
+            IGanttCreationService ganttCreationService, IObjectService objectService, ICollaborativeMessageService messageService, MeterRegistry meterRegistry) {
         this.representationDescriptionSearchService = Objects.requireNonNull(representationDescriptionSearchService);
         this.representationPersistenceService = Objects.requireNonNull(representationPersistenceService);
-        this.ganttCreationService = Objects.requireNonNull(diagramCreationService);
+        this.ganttCreationService = Objects.requireNonNull(ganttCreationService);
         this.objectService = Objects.requireNonNull(objectService);
         this.messageService = Objects.requireNonNull(messageService);
 
@@ -97,10 +97,10 @@ public void handle(One<IPayload> payloadSink, Many<ChangeDescription> changeDesc
             Optional<Object> optionalObject = this.objectService.getObject(editingContext, createRepresentationInput.objectId());
 
             if (optionalDiagramDescription.isPresent() && optionalObject.isPresent()) {
-                GanttDescription diagramDescription = optionalDiagramDescription.get();
+                GanttDescription ganttDescription = optionalDiagramDescription.get();
                 Object object = optionalObject.get();
 
-                Gantt ganttDiagram = this.ganttCreationService.create(createRepresentationInput.representationName(), object, diagramDescription, editingContext);
+                Gantt ganttDiagram = this.ganttCreationService.create(createRepresentationInput.representationName(), object, ganttDescription, editingContext);
 
                 this.representationPersistenceService.save(editingContext, ganttDiagram);
 
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/handlers/RenameGanttEventHandler.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/handlers/RenameGanttEventHandler.java
new file mode 100644
index 0000000000..eb3315cb5d
--- /dev/null
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/handlers/RenameGanttEventHandler.java
@@ -0,0 +1,98 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.collaborative.gantt.handlers;
+
+import java.util.Objects;
+import java.util.Optional;
+
+import org.eclipse.sirius.components.collaborative.api.ChangeDescription;
+import org.eclipse.sirius.components.collaborative.api.ChangeKind;
+import org.eclipse.sirius.components.collaborative.api.IRepresentationPersistenceService;
+import org.eclipse.sirius.components.collaborative.api.IRepresentationSearchService;
+import org.eclipse.sirius.components.collaborative.api.Monitoring;
+import org.eclipse.sirius.components.collaborative.dto.RenameRepresentationSuccessPayload;
+import org.eclipse.sirius.components.collaborative.gantt.api.IGanttEventHandler;
+import org.eclipse.sirius.components.collaborative.gantt.api.IGanttInput;
+import org.eclipse.sirius.components.collaborative.gantt.dto.input.RenameGanttInput;
+import org.eclipse.sirius.components.collaborative.gantt.message.ICollaborativeGanttMessageService;
+import org.eclipse.sirius.components.core.api.ErrorPayload;
+import org.eclipse.sirius.components.core.api.IEditingContext;
+import org.eclipse.sirius.components.core.api.IPayload;
+import org.eclipse.sirius.components.gantt.Gantt;
+import org.springframework.stereotype.Service;
+
+import io.micrometer.core.instrument.Counter;
+import io.micrometer.core.instrument.MeterRegistry;
+import reactor.core.publisher.Sinks.Many;
+import reactor.core.publisher.Sinks.One;
+
+/**
+ * Handler used to rename a gantt.
+ *
+ * @author lfasani
+ */
+@Service
+public class RenameGanttEventHandler implements IGanttEventHandler {
+
+    private final IRepresentationSearchService representationSearchService;
+
+    private final IRepresentationPersistenceService representationPersistenceService;
+
+    private final ICollaborativeGanttMessageService messageService;
+
+    private final Counter counter;
+
+    public RenameGanttEventHandler(IRepresentationSearchService representationSearchService, IRepresentationPersistenceService representationPersistenceService,
+            ICollaborativeGanttMessageService messageService, MeterRegistry meterRegistry) {
+        this.representationSearchService = Objects.requireNonNull(representationSearchService);
+        this.representationPersistenceService = Objects.requireNonNull(representationPersistenceService);
+        this.messageService = Objects.requireNonNull(messageService);
+
+        this.counter = Counter.builder(Monitoring.EVENT_HANDLER)
+                .tag(Monitoring.NAME, this.getClass().getSimpleName())
+                .register(meterRegistry);
+    }
+
+    @Override
+    public boolean canHandle(IGanttInput ganttInput) {
+        return ganttInput instanceof RenameGanttInput;
+    }
+
+    @Override
+    public void handle(One<IPayload> payloadSink, Many<ChangeDescription> changeDescriptionSink, IEditingContext editingContext, Gantt gantt, IGanttInput ganttInput) {
+        this.counter.increment();
+
+        String message = this.messageService.invalidInput(ganttInput.getClass().getSimpleName(), RenameGanttInput.class.getSimpleName());
+        IPayload payload = new ErrorPayload(ganttInput.id(), message);
+        ChangeDescription changeDescription = new ChangeDescription(ChangeKind.NOTHING, ganttInput.representationId(), ganttInput);
+
+        if (ganttInput instanceof RenameGanttInput) {
+            RenameGanttInput renameRepresentationInput = (RenameGanttInput) ganttInput;
+            String representationId = renameRepresentationInput.representationId();
+            String newLabel = renameRepresentationInput.newLabel();
+            Optional<Gantt> optionalDiagram = this.representationSearchService.findById(editingContext, representationId, Gantt.class);
+            if (optionalDiagram.isPresent()) {
+                Gantt currentGantt = optionalDiagram.get();
+
+                Gantt renamedGantt = Gantt.newGantt(currentGantt).label(newLabel).build();
+                this.representationPersistenceService.save(editingContext, renamedGantt);
+
+                payload = new RenameRepresentationSuccessPayload(ganttInput.id(), renamedGantt);
+                changeDescription = new ChangeDescription(ChangeKind.REPRESENTATION_RENAMING, renameRepresentationInput.representationId(), ganttInput);
+            }
+        }
+
+        payloadSink.tryEmitValue(payload);
+        changeDescriptionSink.tryEmitNext(changeDescription);
+    }
+}
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/CollaborativeGanttMessageService.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/CollaborativeGanttMessageService.java
new file mode 100644
index 0000000000..7ba3df5f2c
--- /dev/null
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/CollaborativeGanttMessageService.java
@@ -0,0 +1,38 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.collaborative.gantt.message;
+
+import java.util.Objects;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.context.support.MessageSourceAccessor;
+import org.springframework.stereotype.Service;
+
+/**
+ * Implementation of the collaborative gantt message service.
+ *
+ * @author lfasani
+ */
+@Service
+public class CollaborativeGanttMessageService implements ICollaborativeGanttMessageService {
+    private final MessageSourceAccessor messageSourceAccessor;
+
+    public CollaborativeGanttMessageService(@Qualifier("collaborativeGanttMessageSourceAccessor") MessageSourceAccessor messageSourceAccessor) {
+        this.messageSourceAccessor = Objects.requireNonNull(messageSourceAccessor);
+    }
+
+    @Override
+    public String invalidInput(String expectedInputTypeName, String receivedInputTypeName) {
+        return this.messageSourceAccessor.getMessage(MessageConstants.INVALID_INPUT, new Object[] { expectedInputTypeName, receivedInputTypeName });
+    }
+}
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/CollaborativeGanttMessageServiceConfiguration.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/CollaborativeGanttMessageServiceConfiguration.java
new file mode 100644
index 0000000000..e0326b1f21
--- /dev/null
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/CollaborativeGanttMessageServiceConfiguration.java
@@ -0,0 +1,35 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.collaborative.gantt.message;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.support.MessageSourceAccessor;
+import org.springframework.context.support.ResourceBundleMessageSource;
+
+/**
+ * Configuration used to retrieve the message source accessor for the project.
+ *
+ * @author lfasani
+ */
+@Configuration
+public class CollaborativeGanttMessageServiceConfiguration {
+    private static final String PATH = "messages/sirius-web-collaborative-gantt";
+
+    @Bean
+    public MessageSourceAccessor collaborativeGanttMessageSourceAccessor() {
+        ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
+        messageSource.addBasenames(PATH);
+        return new MessageSourceAccessor(messageSource);
+    }
+}
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/ICollaborativeGanttMessageService.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/ICollaborativeGanttMessageService.java
new file mode 100644
index 0000000000..d92144816c
--- /dev/null
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/ICollaborativeGanttMessageService.java
@@ -0,0 +1,36 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.collaborative.gantt.message;
+
+/**
+ * Interface of the collaborative gantt message service.
+ *
+ * @author lfasani
+ */
+public interface ICollaborativeGanttMessageService {
+
+    String invalidInput(String expectedInputTypeName, String receivedInputTypeName);
+
+    /**
+     * Implementation which does nothing, used for mocks in unit tests.
+     *
+     * @author lfasani
+     */
+    class NoOp implements ICollaborativeGanttMessageService {
+
+        @Override
+        public String invalidInput(String expectedInputTypeName, String receivedInputTypeName) {
+            return "";
+        }
+    }
+}
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/MessageConstants.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/MessageConstants.java
new file mode 100644
index 0000000000..5f0a82cea0
--- /dev/null
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/message/MessageConstants.java
@@ -0,0 +1,28 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.collaborative.gantt.message;
+
+/**
+ * This class is used to hold all the keys of the internationalization messages.
+ *
+ * @author lfasani
+ */
+public final class MessageConstants {
+
+    public static final String INVALID_INPUT = "INVALID_INPUT";
+
+
+    private MessageConstants() {
+        // Prevent instantiation
+    }
+}
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/service/GanttCreationService.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/service/GanttCreationService.java
index d4c4c852bf..a88c8757a9 100644
--- a/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/service/GanttCreationService.java
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/main/java/org/eclipse/sirius/components/collaborative/gantt/service/GanttCreationService.java
@@ -44,8 +44,6 @@ public class GanttCreationService implements IGanttCreationService {
 
     private final IRepresentationDescriptionSearchService representationDescriptionSearchService;
 
-    private final IRepresentationPersistenceService representationPersistenceService;
-
     private final IObjectService objectService;
 
     private final Timer timer;
@@ -53,7 +51,6 @@ public class GanttCreationService implements IGanttCreationService {
     public GanttCreationService(IRepresentationDescriptionSearchService representationDescriptionSearchService, IRepresentationPersistenceService representationPersistenceService,
             IObjectService objectService, MeterRegistry meterRegistry) {
         this.representationDescriptionSearchService = Objects.requireNonNull(representationDescriptionSearchService);
-        this.representationPersistenceService = Objects.requireNonNull(representationPersistenceService);
         this.objectService = Objects.requireNonNull(objectService);
         this.timer = Timer.builder(Monitoring.REPRESENTATION_EVENT_PROCESSOR_REFRESH)
                 .tag(Monitoring.NAME, "gantt")
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/ArchitectureConstants.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/ArchitectureConstants.java
index f5c0297d30..7694f402fe 100644
--- a/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/ArchitectureConstants.java
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/ArchitectureConstants.java
@@ -22,14 +22,12 @@
  * @author sbegaudeau
  */
 public final class ArchitectureConstants {
-    public static final String SIRIUS_COMPONENTS_COLLABORATIVE_FORMS_ROOT_PACKAGE = "org.eclipse.sirius.components.collaborative.forms..";
+    public static final String SIRIUS_COMPONENTS_COLLABORATIVE_GANTT_ROOT_PACKAGE = "org.eclipse.sirius.components.collaborative.gantt..";
 
-    // @formatter:off
     public static final JavaClasses CLASSES = new ClassFileImporter()
             .withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_JARS)
             .withImportOption(ImportOption.Predefined.DO_NOT_INCLUDE_TESTS)
-            .importPackages(SIRIUS_COMPONENTS_COLLABORATIVE_FORMS_ROOT_PACKAGE);
-    // @formatter:on
+            .importPackages(SIRIUS_COMPONENTS_COLLABORATIVE_GANTT_ROOT_PACKAGE);
 
     private ArchitectureConstants() {
         // Prevent instantiation
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/CodingRulesTests.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/CodingRulesTests.java
index 19d503631b..6036b0783f 100644
--- a/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/CodingRulesTests.java
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/CodingRulesTests.java
@@ -26,7 +26,7 @@ public class CodingRulesTests extends AbstractCodingRulesTests {
 
     @Override
     protected String getProjectRootPackage() {
-        return ArchitectureConstants.SIRIUS_COMPONENTS_COLLABORATIVE_FORMS_ROOT_PACKAGE;
+        return ArchitectureConstants.SIRIUS_COMPONENTS_COLLABORATIVE_GANTT_ROOT_PACKAGE;
     }
 
     @Override
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/SpringCodingRulesTests.java b/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/SpringCodingRulesTests.java
index 09e6650faa..cb9facac81 100644
--- a/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/SpringCodingRulesTests.java
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/src/test/java/org/eclipse/sirius/components/collaborative/gantt/architecture/SpringCodingRulesTests.java
@@ -25,7 +25,7 @@ public class SpringCodingRulesTests extends AbstractSpringCodingRulesTests {
 
     @Override
     protected String getProjectRootPackage() {
-        return ArchitectureConstants.SIRIUS_COMPONENTS_COLLABORATIVE_FORMS_ROOT_PACKAGE;
+        return ArchitectureConstants.SIRIUS_COMPONENTS_COLLABORATIVE_GANTT_ROOT_PACKAGE;
     }
 
     @Override
diff --git a/packages/gantt/backend/sirius-components-gantt/pom.xml b/packages/gantt/backend/sirius-components-gantt/pom.xml
index a607214ef4..d3e0254f5e 100644
--- a/packages/gantt/backend/sirius-components-gantt/pom.xml
+++ b/packages/gantt/backend/sirius-components-gantt/pom.xml
@@ -31,17 +31,6 @@
 		<java.version>17</java.version>
 	</properties>
 
-	<repositories>
-		<repository>
-			<id>Central</id>
-			<url>https://repo.maven.apache.org/maven2</url>
-		</repository>
-		<repository>
-			<id>github-sirius-components</id>
-			<url>https://maven.pkg.github.com/eclipse-sirius/sirius-components</url>
-		</repository>
-	</repositories>
-
 	<distributionManagement>
 		<repository>
 			<id>github</id>
@@ -51,14 +40,6 @@
 	</distributionManagement>
 
 	<dependencies>
-		<dependency>
-			<groupId>org.springframework</groupId>
-			<artifactId>spring-context</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>io.micrometer</groupId>
-			<artifactId>micrometer-core</artifactId>
-		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
@@ -75,10 +56,6 @@
 			<version>2023.12.0</version>
 			<scope>test</scope>
 		</dependency>
-		<dependency>
-			<groupId>com.fasterxml.jackson.core</groupId>
-			<artifactId>jackson-annotations</artifactId>
-		</dependency>
 	</dependencies>
 
 	<build>
diff --git a/packages/gantt/backend/sirius-components-gantt/src/main/java/org/eclipse/sirius/components/gantt/Gantt.java b/packages/gantt/backend/sirius-components-gantt/src/main/java/org/eclipse/sirius/components/gantt/Gantt.java
index 2c009af001..f29bb5418a 100644
--- a/packages/gantt/backend/sirius-components-gantt/src/main/java/org/eclipse/sirius/components/gantt/Gantt.java
+++ b/packages/gantt/backend/sirius-components-gantt/src/main/java/org/eclipse/sirius/components/gantt/Gantt.java
@@ -57,4 +57,62 @@ public String getLabel() {
     public String getKind() {
         return KIND;
     }
+
+    public static Builder newGantt(Gantt gantt) {
+        return new Builder(gantt);
+    }
+
+    /**
+     * The builder used to create a gantt.
+     *
+     * @author lfasani
+     */
+    @SuppressWarnings("checkstyle:HiddenField")
+    public static final class Builder {
+        private String id;
+
+        private String targetObjectId;
+
+        private String descriptionId;
+
+        private String label;
+
+        private List<Task> tasks;
+
+        private Builder(String id) {
+            this.id = Objects.requireNonNull(id);
+        }
+
+        private Builder(Gantt gantt) {
+            this.id = gantt.getId();
+            this.targetObjectId = gantt.getTargetObjectId();
+            this.descriptionId = gantt.getDescriptionId();
+            this.label = gantt.getLabel();
+        }
+
+        public Builder targetObjectId(String targetObjectId) {
+            this.targetObjectId = Objects.requireNonNull(targetObjectId);
+            return this;
+        }
+
+        public Builder descriptionId(String descriptionId) {
+            this.descriptionId = Objects.requireNonNull(descriptionId);
+            return this;
+        }
+
+        public Builder label(String label) {
+            this.label = Objects.requireNonNull(label);
+            return this;
+        }
+
+        public Builder tasks(List<Task> tasks) {
+            this.tasks = Objects.requireNonNull(tasks);
+            return this;
+        }
+
+        public Gantt build() {
+            Gantt gantt = new Gantt(this.id, this.descriptionId, this.targetObjectId, this.label, this.tasks);
+            return gantt;
+        }
+    }
 }
diff --git a/packages/gantt/backend/sirius-components-gantt/src/main/java/org/eclipse/sirius/components/gantt/renderer/GanttElementFactory.java b/packages/gantt/backend/sirius-components-gantt/src/main/java/org/eclipse/sirius/components/gantt/renderer/GanttElementFactory.java
index 14558f355e..dc7a278417 100644
--- a/packages/gantt/backend/sirius-components-gantt/src/main/java/org/eclipse/sirius/components/gantt/renderer/GanttElementFactory.java
+++ b/packages/gantt/backend/sirius-components-gantt/src/main/java/org/eclipse/sirius/components/gantt/renderer/GanttElementFactory.java
@@ -40,23 +40,19 @@ public Object instantiateElement(String type, IProps props, List<Object> childre
     }
 
     private Gantt instantiateGantt(GanttElementProps props, List<Object> children) {
-        // @formatter:off
         List<Task> tasks = children.stream()
                 .filter(Task.class::isInstance)
                 .map(Task.class::cast)
                 .toList();
-        // @formatter:on
 
         return new Gantt(props.id(), props.descriptionId(), props.targetObjectId(), props.label(), tasks);
     }
 
     private Task instantiateTask(TaskElementProps props, List<Object> children) {
-        // @formatter:off
         List<Task> subTasks = children.stream()
                 .filter(Task.class::isInstance)
                 .map(Task.class::cast)
                 .toList();
-        // @formatter:on
 
         return new Task(props.id(), props.descriptionId(), props.targetObjectId(), props.targetObjectKind(), props.targetObjectLabel(), props.detail(), subTasks);
     }
diff --git a/packages/gantt/frontend/sirius-components-gantt/package.json b/packages/gantt/frontend/sirius-components-gantt/package.json
index d0176229b5..1ddbd1d4fe 100644
--- a/packages/gantt/frontend/sirius-components-gantt/package.json
+++ b/packages/gantt/frontend/sirius-components-gantt/package.json
@@ -31,7 +31,7 @@
   "peerDependencies": {
     "@apollo/client": "3.8.1",
     "@ObeoNetwork/gantt-task-react": "0.3.10",
-    "@eclipse-sirius/sirius-components-core": "~2023.12.0",
+    "@eclipse-sirius/sirius-components-core": "*",
     "@material-ui/core": "4.12.4",
     "@material-ui/icons": "4.11.3",
     "@xstate/react": "1.6.3",
@@ -41,8 +41,8 @@
   },
   "devDependencies": {
     "@apollo/client": "3.8.1",
-    "@eclipse-sirius/sirius-components-core": "~2023.12.0",
-    "@eclipse-sirius/sirius-components-tsconfig": "~2023.12.0",
+    "@eclipse-sirius/sirius-components-core": "*",
+    "@eclipse-sirius/sirius-components-tsconfig": "*",
     "@material-ui/core": "4.12.4",
     "@material-ui/icons": "4.11.3",
     "@ObeoNetwork/gantt-task-react": "0.3.10",
diff --git a/packages/task/backend/pom.xml b/packages/task/backend/pom.xml
index 895c4ad440..4004f8a833 100644
--- a/packages/task/backend/pom.xml
+++ b/packages/task/backend/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
- Copyright (c) 2022 Obeo.
+ Copyright (c) 2023 Obeo.
  This program and the accompanying materials
  are made available under the terms of the Eclipse Public License v2.0
  which accompanies this distribution, and is available at
diff --git a/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/task/ViewGanttDescriptionConverter.java b/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/task/ViewGanttDescriptionConverter.java
index eb39fb032f..dc649f6bfd 100644
--- a/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/task/ViewGanttDescriptionConverter.java
+++ b/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/task/ViewGanttDescriptionConverter.java
@@ -53,11 +53,11 @@ public class ViewGanttDescriptionConverter implements IRepresentationDescription
 
     private final Function<VariableManager, String> semanticTargetLabelProvider;
 
-    private GanttIdProvider ganttIdProvider;
+    private final GanttIdProvider ganttIdProvider;
 
     public ViewGanttDescriptionConverter(IObjectService objectService, GanttIdProvider ganttIdProvider) {
         this.objectService = Objects.requireNonNull(objectService);
-        this.ganttIdProvider = ganttIdProvider;
+        this.ganttIdProvider = Objects.requireNonNull(ganttIdProvider);
         this.semanticTargetIdProvider = variableManager -> this.self(variableManager).map(this.objectService::getId).orElse(null);
         this.semanticTargetKindProvider = variableManager -> this.self(variableManager).map(this.objectService::getKind).orElse(null);
         this.semanticTargetLabelProvider = variableManager -> this.self(variableManager).map(this.objectService::getLabel).orElse(null);
@@ -71,7 +71,7 @@ public boolean canConvert(RepresentationDescription representationDescription) {
 
     @Override
     public IRepresentationDescription convert(RepresentationDescription viewRepresentationDescription, List<RepresentationDescription> allRepresentationDescriptions, AQLInterpreter interpreter) {
-        final org.eclipse.sirius.components.view.gantt.GanttDescription viewGanttDescription = (org.eclipse.sirius.components.view.gantt.GanttDescription) viewRepresentationDescription;
+        org.eclipse.sirius.components.view.gantt.GanttDescription viewGanttDescription = (org.eclipse.sirius.components.view.gantt.GanttDescription) viewRepresentationDescription;
 
         List<TaskDescription> taskDescriptions = viewGanttDescription.getTaskElementDescriptions().stream().map(taskDescription -> this.convert(taskDescription, interpreter)).toList();
 
diff --git a/packages/view/backend/sirius-components-view-gantt-edit/pom.xml b/packages/view/backend/sirius-components-view-gantt-edit/pom.xml
index 38e51a52f5..d830114db7 100644
--- a/packages/view/backend/sirius-components-view-gantt-edit/pom.xml
+++ b/packages/view/backend/sirius-components-view-gantt-edit/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.0.6</version>
+		<version>3.1.2</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.eclipse.sirius</groupId>
@@ -31,7 +31,7 @@
 		<repository>
 			<id>github</id>
 			<name>Apache Maven Packages</name>
-			<url>https://maven.pkg.github.com/eclipse-sirius/sirius-components</url>
+			<url>https://maven.pkg.github.com/eclipse-sirius/sirius-web</url>
 		</repository>
 	</distributionManagement>
 
diff --git a/packages/view/backend/sirius-components-view-gantt/pom.xml b/packages/view/backend/sirius-components-view-gantt/pom.xml
index 07516e4316..4b3dd89d90 100644
--- a/packages/view/backend/sirius-components-view-gantt/pom.xml
+++ b/packages/view/backend/sirius-components-view-gantt/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.0.6</version>
+		<version>3.1.2</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.eclipse.sirius</groupId>
@@ -31,7 +31,7 @@
 		<repository>
 			<id>github</id>
 			<name>Apache Maven Packages</name>
-			<url>https://maven.pkg.github.com/eclipse-sirius/sirius-components</url>
+			<url>https://maven.pkg.github.com/eclipse-sirius/sirius-web</url>
 		</repository>
 	</distributionManagement>