diff --git a/cpp/src/groupby/hash/compute_groupby.cu b/cpp/src/groupby/hash/compute_groupby.cu
index 36441f7af61..37dd2657663 100644
--- a/cpp/src/groupby/hash/compute_groupby.cu
+++ b/cpp/src/groupby/hash/compute_groupby.cu
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2024, NVIDIA CORPORATION.
+ * Copyright (c) 2024, NVIDIA CORPORATION.
  *
  * 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/cpp/src/groupby/hash/compute_groupby.hpp b/cpp/src/groupby/hash/compute_groupby.hpp
index 57daea29f99..a3def9abdb1 100644
--- a/cpp/src/groupby/hash/compute_groupby.hpp
+++ b/cpp/src/groupby/hash/compute_groupby.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2024, NVIDIA CORPORATION.
+ * Copyright (c) 2024, NVIDIA CORPORATION.
  *
  * 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/cpp/src/groupby/hash/hash_compound_agg_finalizer.cu b/cpp/src/groupby/hash/hash_compound_agg_finalizer.cu
index 221e63ac121..41d00ee6d37 100644
--- a/cpp/src/groupby/hash/hash_compound_agg_finalizer.cu
+++ b/cpp/src/groupby/hash/hash_compound_agg_finalizer.cu
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2024, NVIDIA CORPORATION.
+ * Copyright (c) 2024, NVIDIA CORPORATION.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -196,5 +196,4 @@ void hash_compound_agg_finalizer<SetType>::visit(cudf::detail::std_aggregation c
 
 template class hash_compound_agg_finalizer<hash_set_ref_t<cuco::find_tag>>;
 template class hash_compound_agg_finalizer<nullable_hash_set_ref_t<cuco::find_tag>>;
-
 }  // namespace cudf::groupby::detail::hash
diff --git a/cpp/src/groupby/hash/hash_compound_agg_finalizer.hpp b/cpp/src/groupby/hash/hash_compound_agg_finalizer.hpp
index 16cbe92511f..8bee1a92c40 100644
--- a/cpp/src/groupby/hash/hash_compound_agg_finalizer.hpp
+++ b/cpp/src/groupby/hash/hash_compound_agg_finalizer.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2024, NVIDIA CORPORATION.
+ * Copyright (c) 2024, NVIDIA CORPORATION.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.