diff --git a/google/cloud/bigtable/data/_async/_mutate_rows.py b/google/cloud/bigtable/data/_async/_mutate_rows.py
index c5795c464..bf618bf04 100644
--- a/google/cloud/bigtable/data/_async/_mutate_rows.py
+++ b/google/cloud/bigtable/data/_async/_mutate_rows.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/google/cloud/bigtable/data/_async/_read_rows.py b/google/cloud/bigtable/data/_async/_read_rows.py
index c02b3750d..6d2fa3a7d 100644
--- a/google/cloud/bigtable/data/_async/_read_rows.py
+++ b/google/cloud/bigtable/data/_async/_read_rows.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/google/cloud/bigtable/data/_async/client.py b/google/cloud/bigtable/data/_async/client.py
index 2b83ef55b..c7cc0de6b 100644
--- a/google/cloud/bigtable/data/_async/client.py
+++ b/google/cloud/bigtable/data/_async/client.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/google/cloud/bigtable/data/_async/mutations_batcher.py b/google/cloud/bigtable/data/_async/mutations_batcher.py
index 2e935ca67..6e15bb5f3 100644
--- a/google/cloud/bigtable/data/_async/mutations_batcher.py
+++ b/google/cloud/bigtable/data/_async/mutations_batcher.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/google/cloud/bigtable/data/_sync_autogen/_mutate_rows.py b/google/cloud/bigtable/data/_sync_autogen/_mutate_rows.py
index 0f6edb395..8e8c5ca89 100644
--- a/google/cloud/bigtable/data/_sync_autogen/_mutate_rows.py
+++ b/google/cloud/bigtable/data/_sync_autogen/_mutate_rows.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/google/cloud/bigtable/data/_sync_autogen/_read_rows.py b/google/cloud/bigtable/data/_sync_autogen/_read_rows.py
index 708add7f0..92619c6a4 100644
--- a/google/cloud/bigtable/data/_sync_autogen/_read_rows.py
+++ b/google/cloud/bigtable/data/_sync_autogen/_read_rows.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/google/cloud/bigtable/data/_sync_autogen/client.py b/google/cloud/bigtable/data/_sync_autogen/client.py
index af6449bbe..37e192147 100644
--- a/google/cloud/bigtable/data/_sync_autogen/client.py
+++ b/google/cloud/bigtable/data/_sync_autogen/client.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/google/cloud/bigtable/data/_sync_autogen/mutations_batcher.py b/google/cloud/bigtable/data/_sync_autogen/mutations_batcher.py
index 3c2bbfc7f..2e4237b74 100644
--- a/google/cloud/bigtable/data/_sync_autogen/mutations_batcher.py
+++ b/google/cloud/bigtable/data/_sync_autogen/mutations_batcher.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/test_proxy/handlers/client_handler_data_async.py b/test_proxy/handlers/client_handler_data_async.py
index 7f6cc413f..49539c1aa 100644
--- a/test_proxy/handlers/client_handler_data_async.py
+++ b/test_proxy/handlers/client_handler_data_async.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/tests/system/data/test_system_async.py b/tests/system/data/test_system_async.py
index c0e9f39d2..b97859de1 100644
--- a/tests/system/data/test_system_async.py
+++ b/tests/system/data/test_system_async.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/tests/system/data/test_system_autogen.py b/tests/system/data/test_system_autogen.py
index edc10679d..2dde82bf1 100644
--- a/tests/system/data/test_system_autogen.py
+++ b/tests/system/data/test_system_autogen.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/tests/unit/data/_async/test__mutate_rows.py b/tests/unit/data/_async/test__mutate_rows.py
index 621f4d9a2..13f668fd3 100644
--- a/tests/unit/data/_async/test__mutate_rows.py
+++ b/tests/unit/data/_async/test__mutate_rows.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/tests/unit/data/_async/test__read_rows.py b/tests/unit/data/_async/test__read_rows.py
index 33353b52a..944681a84 100644
--- a/tests/unit/data/_async/test__read_rows.py
+++ b/tests/unit/data/_async/test__read_rows.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/tests/unit/data/_async/test_client.py b/tests/unit/data/_async/test_client.py
index b2cbd026c..a97adfe22 100644
--- a/tests/unit/data/_async/test_client.py
+++ b/tests/unit/data/_async/test_client.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/tests/unit/data/_async/test_mutations_batcher.py b/tests/unit/data/_async/test_mutations_batcher.py
index cd442d392..2df8dde6d 100644
--- a/tests/unit/data/_async/test_mutations_batcher.py
+++ b/tests/unit/data/_async/test_mutations_batcher.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/tests/unit/data/_async/test_read_rows_acceptance.py b/tests/unit/data/_async/test_read_rows_acceptance.py
index 45d139182..ab9502223 100644
--- a/tests/unit/data/_async/test_read_rows_acceptance.py
+++ b/tests/unit/data/_async/test_read_rows_acceptance.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/tests/unit/data/_sync_autogen/test__mutate_rows.py b/tests/unit/data/_sync_autogen/test__mutate_rows.py
index dddeec5a6..2173c88fb 100644
--- a/tests/unit/data/_sync_autogen/test__mutate_rows.py
+++ b/tests/unit/data/_sync_autogen/test__mutate_rows.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/tests/unit/data/_sync_autogen/test__read_rows.py b/tests/unit/data/_sync_autogen/test__read_rows.py
index 25c209d6e..973b07bcb 100644
--- a/tests/unit/data/_sync_autogen/test__read_rows.py
+++ b/tests/unit/data/_sync_autogen/test__read_rows.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/tests/unit/data/_sync_autogen/test_client.py b/tests/unit/data/_sync_autogen/test_client.py
index f6871cd33..ddeea394a 100644
--- a/tests/unit/data/_sync_autogen/test_client.py
+++ b/tests/unit/data/_sync_autogen/test_client.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -1681,7 +1681,7 @@ def mock_call(*args, **kwargs):
                     with pytest.raises(ShardedReadRowsExceptionGroup) as exc:
                         table.read_rows_sharded(queries, operation_timeout=0.05)
                     assert isinstance(exc.value, ShardedReadRowsExceptionGroup)
-                    assert len(exc.value.exceptions) >= num_calls - _CONCURRENCY_LIMIT
+                    assert len(exc.value.exceptions) == num_calls - _CONCURRENCY_LIMIT
                     assert all(
                         (
                             isinstance(e.__cause__, DeadlineExceeded)
diff --git a/tests/unit/data/_sync_autogen/test_mutations_batcher.py b/tests/unit/data/_sync_autogen/test_mutations_batcher.py
index 1cb57f3e5..59ea621ac 100644
--- a/tests/unit/data/_sync_autogen/test_mutations_batcher.py
+++ b/tests/unit/data/_sync_autogen/test_mutations_batcher.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # 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/tests/unit/data/_sync_autogen/test_read_rows_acceptance.py b/tests/unit/data/_sync_autogen/test_read_rows_acceptance.py
index 3dc3dd00c..8ceb0daf7 100644
--- a/tests/unit/data/_sync_autogen/test_read_rows_acceptance.py
+++ b/tests/unit/data/_sync_autogen/test_read_rows_acceptance.py
@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.