diff --git a/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/IfMissing.scala b/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/IfMissing.scala
index 1e640ed0d..1f176270a 100644
--- a/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/IfMissing.scala
+++ b/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/IfMissing.scala
@@ -1,3 +1,10 @@
+/*
+ * Zinc - The incremental compiler for Scala.
+ * Copyright 2011 - 2017, Lightbend, Inc.
+ * Copyright 2008 - 2010, Mark Harrah
+ * This software is released under the terms written in LICENSE.
+ */
+
 package sbt.internal.inc
 
 sealed trait IfMissing
diff --git a/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/InvalidComponent.scala b/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/InvalidComponent.scala
index c1e011bc6..df0505abc 100644
--- a/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/InvalidComponent.scala
+++ b/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/InvalidComponent.scala
@@ -1,3 +1,10 @@
+/*
+ * Zinc - The incremental compiler for Scala.
+ * Copyright 2011 - 2017, Lightbend, Inc.
+ * Copyright 2008 - 2010, Mark Harrah
+ * This software is released under the terms written in LICENSE.
+ */
+
 package sbt.internal.inc
 
 class InvalidComponent(msg: String, cause: Throwable) extends RuntimeException(msg, cause) {
diff --git a/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/ResourceLoader.scala b/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/ResourceLoader.scala
index db2758743..4399747dc 100644
--- a/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/ResourceLoader.scala
+++ b/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/ResourceLoader.scala
@@ -1,3 +1,10 @@
+/*
+ * Zinc - The incremental compiler for Scala.
+ * Copyright 2011 - 2017, Lightbend, Inc.
+ * Copyright 2008 - 2010, Mark Harrah
+ * This software is released under the terms written in LICENSE.
+ */
+
 package sbt.internal.inc
 
 import java.util.Properties