diff --git a/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/api/EditingDomainSource.java b/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/api/EditingDomainSource.java
index 9e48e570a..6c9d0b5f0 100644
--- a/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/api/EditingDomainSource.java
+++ b/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/api/EditingDomainSource.java
@@ -1,3 +1,15 @@
+/*******************************************************************************
+ * Copyright (c) 2024 ArSysOp
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * https://www.eclipse.org/legal/epl-2.0/.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     ArSysOp - initial API and implementation
+ *******************************************************************************/
 package org.eclipse.passage.loc.internal.api;
 
 import org.eclipse.emf.edit.domain.EditingDomain;
diff --git a/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/api/OperatorGear.java b/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/api/OperatorGear.java
index 89987d022..f08e7b5ca 100644
--- a/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/api/OperatorGear.java
+++ b/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/api/OperatorGear.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2021 ArSysOp
+ * Copyright (c) 2021, 2024 ArSysOp
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
@@ -9,6 +9,7 @@
  *
  * Contributors:
  *     ArSysOp - initial API and implementation
+ *     ArSysOp - further evolution
  *******************************************************************************/
 package org.eclipse.passage.loc.internal.api;
 
diff --git a/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/emf/BaseDomainRegistry.java b/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/emf/BaseDomainRegistry.java
index 17e21d153..637bdb480 100644
--- a/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/emf/BaseDomainRegistry.java
+++ b/bundles/org.eclipse.passage.loc.api/src/org/eclipse/passage/loc/internal/emf/BaseDomainRegistry.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2018, 2022 ArSysOp
+ * Copyright (c) 2018, 2024 ArSysOp
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
@@ -9,6 +9,7 @@
  *
  * Contributors:
  *     ArSysOp - initial API and implementation
+ *     ArSysOp - further evolution
  *******************************************************************************/
 package org.eclipse.passage.loc.internal.emf;
 
diff --git a/bundles/org.eclipse.passage.loc.operator.gear/src/org/eclipse/passage/loc/operator/internal/gear/DefaultGear.java b/bundles/org.eclipse.passage.loc.operator.gear/src/org/eclipse/passage/loc/operator/internal/gear/DefaultGear.java
index b666f8ff7..747289678 100644
--- a/bundles/org.eclipse.passage.loc.operator.gear/src/org/eclipse/passage/loc/operator/internal/gear/DefaultGear.java
+++ b/bundles/org.eclipse.passage.loc.operator.gear/src/org/eclipse/passage/loc/operator/internal/gear/DefaultGear.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2021 ArSysOp
+ * Copyright (c) 2021, 2024 ArSysOp
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
@@ -9,6 +9,7 @@
  *
  * Contributors:
  *     ArSysOp - initial API and implementation
+ *     ArSysOp - further evolution
  *******************************************************************************/
 package org.eclipse.passage.loc.operator.internal.gear;
 
diff --git a/bundles/org.eclipse.passage.loc.operator.gear/src/org/eclipse/passage/loc/operator/internal/gear/services/PassageEditingDomainSource.java b/bundles/org.eclipse.passage.loc.operator.gear/src/org/eclipse/passage/loc/operator/internal/gear/services/PassageEditingDomainSource.java
index 7d56a1523..c1979e46c 100644
--- a/bundles/org.eclipse.passage.loc.operator.gear/src/org/eclipse/passage/loc/operator/internal/gear/services/PassageEditingDomainSource.java
+++ b/bundles/org.eclipse.passage.loc.operator.gear/src/org/eclipse/passage/loc/operator/internal/gear/services/PassageEditingDomainSource.java
@@ -1,3 +1,15 @@
+/*******************************************************************************
+ * Copyright (c) 2024 ArSysOp
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * https://www.eclipse.org/legal/epl-2.0/.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     ArSysOp - initial API and implementation
+ *******************************************************************************/
 package org.eclipse.passage.loc.operator.internal.gear.services;
 
 import java.util.HashMap;