diff --git a/main/src/main/scala/sbt/CommandProgress.scala b/main/src/main/scala/sbt/CommandProgress.scala
index 5b353d972..757cd0a60 100644
--- a/main/src/main/scala/sbt/CommandProgress.scala
+++ b/main/src/main/scala/sbt/CommandProgress.scala
@@ -1,3 +1,11 @@
+/*
+ * sbt
+ * Copyright 2023, Scala center
+ * Copyright 2011 - 2022, Lightbend, Inc.
+ * Copyright 2008 - 2010, Mark Harrah
+ * Licensed under Apache License 2.0 (see LICENSE)
+ */
+
 package sbt
 
 /**