diff --git a/wespeaker/frontend/whisper_encoder.py b/wespeaker/frontend/whisper_encoder.py
index 319431d0..354eeb53 100644
--- a/wespeaker/frontend/whisper_encoder.py
+++ b/wespeaker/frontend/whisper_encoder.py
@@ -1,3 +1,18 @@
+# Copyright (c) 2024 Hongji Wang (jijijiang77@gmail.com)
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
 import numpy as np
 import torch
 import torch.nn.functional as F
diff --git a/wespeaker/models/whisper_PMFA.py b/wespeaker/models/whisper_PMFA.py
index 535c9824..1eafceda 100644
--- a/wespeaker/models/whisper_PMFA.py
+++ b/wespeaker/models/whisper_PMFA.py
@@ -1,3 +1,17 @@
+# Copyright (c) 2022 Hongji Wang (jijijiang77@gmail.com)
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import numpy as np
 import torch
 import torch.nn.functional as F