diff --git a/icefall/diagnostics.py b/icefall/diagnostics.py
index 3a7850310..944f11f64 100644
--- a/icefall/diagnostics.py
+++ b/icefall/diagnostics.py
@@ -1,4 +1,4 @@
-# Copyright      2021  Xiaomi Corp.        (authors: Daniel Povey
+# Copyright      2022  Xiaomi Corp.        (authors: Daniel Povey
 #                                                    Zengwei Yao)
 #
 # See ../LICENSE for clarification regarding multiple authors