diff --git a/cpp/include/cudf/lists/combine.hpp b/cpp/include/cudf/lists/combine.hpp
index 61a81e8a745..7f7db131a93 100644
--- a/cpp/include/cudf/lists/combine.hpp
+++ b/cpp/include/cudf/lists/combine.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, NVIDIA CORPORATION.
+ * Copyright (c) 2021-2022, NVIDIA CORPORATION.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,6 +19,8 @@
 #include <cudf/lists/lists_column_view.hpp>
 
 namespace cudf {
+
+//! Lists column APIs
 namespace lists {
 /**
  * @addtogroup lists_combine
diff --git a/cpp/include/doxygen_groups.h b/cpp/include/doxygen_groups.h
index 5dbf5377396..0abaebc3b0c 100644
--- a/cpp/include/doxygen_groups.h
+++ b/cpp/include/doxygen_groups.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, NVIDIA CORPORATION.
+ * Copyright (c) 2021-2022, NVIDIA CORPORATION.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -146,6 +146,7 @@
  * @{
  *   @defgroup lists_combine Combining
  *   @defgroup lists_extract Extracting
+ *   @defgroup lists_filling Filling
  *   @defgroup lists_contains Searching
  *   @defgroup lists_gather Gathering
  *   @defgroup lists_elements Counting