diff --git a/releaser-core/src/main/java/org/springframework/cloud/release/internal/ProjectUpdater.java b/releaser-core/src/main/java/org/springframework/cloud/release/internal/ProjectUpdater.java
index 0bb3b00c..94ea5955 100644
--- a/releaser-core/src/main/java/org/springframework/cloud/release/internal/ProjectUpdater.java
+++ b/releaser-core/src/main/java/org/springframework/cloud/release/internal/ProjectUpdater.java
@@ -1,3 +1,18 @@
+/*
+ *  Copyright 2013-2017 the original author or authors.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
 package org.springframework.cloud.release.internal;
 
 import java.io.File;
@@ -38,6 +53,12 @@ public class ProjectUpdater {
 		}
 	}
 
+	/**
+	 * For the given root folder (typically the working directory) performs the whole
+	 * flow of updating {@code pom.xml} with values from Spring Cloud Release project.
+	 *
+	 * @param projectRoot - root folder with project to update
+	 */
 	public void updateProject(File projectRoot) {
 		File clonedScRelease = this.gitProjectRepo.cloneProject(
 				URI.create(this.properties.getSpringCloudReleaseGitUrl()));
diff --git a/releaser-core/src/main/java/org/springframework/cloud/release/internal/ReleaserProperties.java b/releaser-core/src/main/java/org/springframework/cloud/release/internal/ReleaserProperties.java
index d46204ab..964f6361 100644
--- a/releaser-core/src/main/java/org/springframework/cloud/release/internal/ReleaserProperties.java
+++ b/releaser-core/src/main/java/org/springframework/cloud/release/internal/ReleaserProperties.java
@@ -1,3 +1,18 @@
+/*
+ *  Copyright 2013-2017 the original author or authors.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
 package org.springframework.cloud.release.internal;
 
 import java.util.List;
diff --git a/releaser-core/src/main/java/org/springframework/cloud/release/internal/Versions.java b/releaser-core/src/main/java/org/springframework/cloud/release/internal/Versions.java
index 2ce12974..d3ff7342 100644
--- a/releaser-core/src/main/java/org/springframework/cloud/release/internal/Versions.java
+++ b/releaser-core/src/main/java/org/springframework/cloud/release/internal/Versions.java
@@ -1,3 +1,18 @@
+/*
+ *  Copyright 2013-2017 the original author or authors.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
 package org.springframework.cloud.release.internal;
 
 import java.util.HashSet;
diff --git a/releaser-spring/src/main/java/org/springframework/cloud/release/spring/ReleaserConfiguration.java b/releaser-spring/src/main/java/org/springframework/cloud/release/spring/ReleaserConfiguration.java
index c68ab6f0..3d10bcd4 100644
--- a/releaser-spring/src/main/java/org/springframework/cloud/release/spring/ReleaserConfiguration.java
+++ b/releaser-spring/src/main/java/org/springframework/cloud/release/spring/ReleaserConfiguration.java
@@ -1,8 +1,19 @@
-package org.springframework.cloud.release.spring;
-
-/**
- * @author Marcin Grzejszczak
+/*
+ *  Copyright 2013-2017 the original author or authors.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
  */
+package org.springframework.cloud.release.spring;
 
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.cloud.release.internal.ProjectUpdater;