diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index ef1453b..79c72b4 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -24,7 +24,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
-        python-version: '3.8.x'
+        python-version: '3.11.x'
     - name: Install dependencies
       run: |
         sudo apt-get -y install libsndfile1-dev
diff --git a/mt3/__init__.py b/mt3/__init__.py
index 7a165ef..c1433e1 100644
--- a/mt3/__init__.py
+++ b/mt3/__init__.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/datasets.py b/mt3/datasets.py
index 82c07c5..1634af5 100644
--- a/mt3/datasets.py
+++ b/mt3/datasets.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/event_codec.py b/mt3/event_codec.py
index 77bb1ff..95fef1c 100644
--- a/mt3/event_codec.py
+++ b/mt3/event_codec.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/event_codec_test.py b/mt3/event_codec_test.py
index 5cfe3ea..d76332f 100644
--- a/mt3/event_codec_test.py
+++ b/mt3/event_codec_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/inference.py b/mt3/inference.py
index 49f4b58..56a5d01 100644
--- a/mt3/inference.py
+++ b/mt3/inference.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/layers.py b/mt3/layers.py
index 602ef92..49002d9 100644
--- a/mt3/layers.py
+++ b/mt3/layers.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/layers_test.py b/mt3/layers_test.py
index e774785..4d9310f 100644
--- a/mt3/layers_test.py
+++ b/mt3/layers_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/metrics.py b/mt3/metrics.py
index 76e4116..a906f4a 100644
--- a/mt3/metrics.py
+++ b/mt3/metrics.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/metrics_utils.py b/mt3/metrics_utils.py
index aef8702..551f588 100644
--- a/mt3/metrics_utils.py
+++ b/mt3/metrics_utils.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/metrics_utils_test.py b/mt3/metrics_utils_test.py
index 7dd120a..8fc538b 100644
--- a/mt3/metrics_utils_test.py
+++ b/mt3/metrics_utils_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/mixing.py b/mt3/mixing.py
index 8d2e658..12debe8 100644
--- a/mt3/mixing.py
+++ b/mt3/mixing.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/models.py b/mt3/models.py
index a796b7e..be0ec46 100644
--- a/mt3/models.py
+++ b/mt3/models.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/network.py b/mt3/network.py
index a1979d5..6930bfc 100644
--- a/mt3/network.py
+++ b/mt3/network.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/note_sequences.py b/mt3/note_sequences.py
index fd3d14f..52bc1b3 100644
--- a/mt3/note_sequences.py
+++ b/mt3/note_sequences.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/note_sequences_test.py b/mt3/note_sequences_test.py
index 5751d1a..34329b8 100644
--- a/mt3/note_sequences_test.py
+++ b/mt3/note_sequences_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/preprocessors.py b/mt3/preprocessors.py
index e770fa9..6900e28 100644
--- a/mt3/preprocessors.py
+++ b/mt3/preprocessors.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/run_length_encoding.py b/mt3/run_length_encoding.py
index 1a860a7..41455f5 100644
--- a/mt3/run_length_encoding.py
+++ b/mt3/run_length_encoding.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/run_length_encoding_test.py b/mt3/run_length_encoding_test.py
index cfb31ea..8a6dd78 100644
--- a/mt3/run_length_encoding_test.py
+++ b/mt3/run_length_encoding_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/scripts/dump_task.py b/mt3/scripts/dump_task.py
index 58912a4..6d928c4 100644
--- a/mt3/scripts/dump_task.py
+++ b/mt3/scripts/dump_task.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/scripts/extract_monophonic_examples.py b/mt3/scripts/extract_monophonic_examples.py
index 0b1115a..fbe6c86 100644
--- a/mt3/scripts/extract_monophonic_examples.py
+++ b/mt3/scripts/extract_monophonic_examples.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/spectral_ops.py b/mt3/spectral_ops.py
index 7c9bac0..9ae3c4f 100644
--- a/mt3/spectral_ops.py
+++ b/mt3/spectral_ops.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/spectrograms.py b/mt3/spectrograms.py
index bc0e15f..f284c17 100644
--- a/mt3/spectrograms.py
+++ b/mt3/spectrograms.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/summaries.py b/mt3/summaries.py
index 5b57e7e..540b4d9 100644
--- a/mt3/summaries.py
+++ b/mt3/summaries.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/tasks.py b/mt3/tasks.py
index f1a1afa..1e84ceb 100644
--- a/mt3/tasks.py
+++ b/mt3/tasks.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/version.py b/mt3/version.py
index 1e88174..3753656 100644
--- a/mt3/version.py
+++ b/mt3/version.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/vocabularies.py b/mt3/vocabularies.py
index fdc4938..9c13ec9 100644
--- a/mt3/vocabularies.py
+++ b/mt3/vocabularies.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mt3/vocabularies_test.py b/mt3/vocabularies_test.py
index e2081ee..be3ef5d 100644
--- a/mt3/vocabularies_test.py
+++ b/mt3/vocabularies_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/setup.py b/setup.py
index 5530651..5110251 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The MT3 Authors.
+# Copyright 2024 The MT3 Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.