diff --git a/egs/librispeech/ASR/pruned_transducer_stateless4/decode.py b/egs/librispeech/ASR/pruned_transducer_stateless4/decode.py
index e868878e6..e06662905 100755
--- a/egs/librispeech/ASR/pruned_transducer_stateless4/decode.py
+++ b/egs/librispeech/ASR/pruned_transducer_stateless4/decode.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 #
-# Copyright 2021 Xiaomi Corporation (Author: Fangjun Kuang)
+# Copyright 2021 Xiaomi Corporation (Author: Fangjun Kuang,
+#                                            Zengwei Yao)
 #
 # See ../../../../LICENSE for clarification regarding multiple authors
 #
diff --git a/egs/librispeech/ASR/pruned_transducer_stateless4/train.py b/egs/librispeech/ASR/pruned_transducer_stateless4/train.py
index 568f41cef..147bcf658 100755
--- a/egs/librispeech/ASR/pruned_transducer_stateless4/train.py
+++ b/egs/librispeech/ASR/pruned_transducer_stateless4/train.py
@@ -1,7 +1,8 @@
 #!/usr/bin/env python3
 # Copyright    2021  Xiaomi Corp.        (authors: Fangjun Kuang,
-#                                                  Wei Kang
-#                                                  Mingshuang Luo)
+#                                                  Wei Kang,
+#                                                  Mingshuang Luo,)
+#                                                  Zengwei Yao)
 #
 # See ../../../../LICENSE for clarification regarding multiple authors
 #
diff --git a/icefall/checkpoint.py b/icefall/checkpoint.py
index 3ad346a1c..77c47fc94 100644
--- a/icefall/checkpoint.py
+++ b/icefall/checkpoint.py
@@ -1,4 +1,5 @@
-# Copyright      2021  Xiaomi Corp.        (authors: Fangjun Kuang)
+# Copyright      2021  Xiaomi Corp.        (authors: Fangjun Kuang,
+#                                                    Zengwei Yao)
 #
 # See ../../LICENSE for clarification regarding multiple authors
 #