diff --git a/code-gen/src/main/scala/scalapb/reactor/ReactorFilePrinter.scala b/code-gen/src/main/scala/scalapb/reactor/ReactorFilePrinter.scala
index cf8b1d0..b28e2f3 100644
--- a/code-gen/src/main/scala/scalapb/reactor/ReactorFilePrinter.scala
+++ b/code-gen/src/main/scala/scalapb/reactor/ReactorFilePrinter.scala
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 kr.ikhoon.scalapb-reactor
+ *
+ * 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 scalapb.reactor
 
 import com.google.protobuf.Descriptors.{FileDescriptor, MethodDescriptor, ServiceDescriptor}
diff --git a/project/plugins.sbt b/project/plugins.sbt
index e53d0ad..66dc843 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -15,4 +15,4 @@ addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.11.0")
 addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.10")
 
 // Header
-addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.6.5")
+addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.10.0")