diff --git a/src/merge_sorter/merge_sorter.hpp b/src/merge_sorter/merge_sorter.hpp
index 250d880..dd2aaee 100644
--- a/src/merge_sorter/merge_sorter.hpp
+++ b/src/merge_sorter/merge_sorter.hpp
@@ -1,3 +1,13 @@
+/**
+ * @file merge_sorter.hpp
+ * @author Mateusz Basiaga (basmateusz@wp.pl)
+ * @brief
+ * @date 2024-11-14
+ *
+ * @copyright Copyright (c) 2024
+ *
+ */
+
 #ifndef MERGE_SORTER_HPP
 #define MERGE_SORTER_HPP
 
diff --git a/src/utils/array_utils/array_utils.cpp b/src/utils/array_utils/array_utils.cpp
index ff30f83..e1990c9 100644
--- a/src/utils/array_utils/array_utils.cpp
+++ b/src/utils/array_utils/array_utils.cpp
@@ -1,3 +1,13 @@
+/**
+ * @file array_utils.cpp
+ * @author Mateusz Basiaga (basmateusz@wp.pl)
+ * @brief
+ * @date 2024-11-14
+ *
+ * @copyright Copyright (c) 2024
+ *
+ */
+
 #include <vector>
 #include <random>
 #include <algorithm>
diff --git a/src/utils/array_utils/array_utils.hpp b/src/utils/array_utils/array_utils.hpp
index 02c8e78..6c953cb 100644
--- a/src/utils/array_utils/array_utils.hpp
+++ b/src/utils/array_utils/array_utils.hpp
@@ -1,3 +1,13 @@
+/**
+ * @file array_utils.hpp
+ * @author Mateusz Basiaga (basmateusz@wp.pl)
+ * @brief
+ * @date 2024-11-14
+ *
+ * @copyright Copyright (c) 2024
+ *
+ */
+
 #ifndef ARRAY_UTILS_HPP
 #define ARRAY_UTILS_HPP
 
diff --git a/src/utils/random_number_generator/random_number_generator.cpp b/src/utils/random_number_generator/random_number_generator.cpp
index 858a60f..12ece3b 100644
--- a/src/utils/random_number_generator/random_number_generator.cpp
+++ b/src/utils/random_number_generator/random_number_generator.cpp
@@ -1,3 +1,13 @@
+/**
+ * @file random_number_generator.cpp
+ * @author Mateusz Basiaga (basmateusz@wp.pl)
+ * @brief
+ * @date 2024-11-14
+ *
+ * @copyright Copyright (c) 2024
+ *
+ */
+
 #include<cstdlib>
 #include<ctime>
 
diff --git a/src/utils/random_number_generator/random_number_generator.hpp b/src/utils/random_number_generator/random_number_generator.hpp
index ff4aceb..817ca3e 100644
--- a/src/utils/random_number_generator/random_number_generator.hpp
+++ b/src/utils/random_number_generator/random_number_generator.hpp
@@ -1,3 +1,13 @@
+/**
+ * @file random_number_generator.hpp
+ * @author Mateusz Basiaga (basmateusz@wp.pl)
+ * @brief
+ * @date 2024-11-14
+ *
+ * @copyright Copyright (c) 2024
+ *
+ */
+
 #ifndef RANDOM_NUMBER_GENERATOR_HPP
 #define RANDOM_NUMBER_GENERATOR_HPP