diff --git a/src/Init/WFTactics.lean b/src/Init/WFTactics.lean
index e328784cca..f6095f60a4 100644
--- a/src/Init/WFTactics.lean
+++ b/src/Init/WFTactics.lean
@@ -1,5 +1,5 @@
 /-
-Copyright (c) 2014 Microsoft Corporation. All rights reserved.
+Copyright (c) 2022 Microsoft Corporation. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Author: Leonardo de Moura
 -/