diff --git a/CHANGELOG.md b/CHANGELOG.md
index 433a976f30..07d38f1bea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,25 @@
 
 ## master (unreleased)
 
+### New features
+
+* [#384](https://github.com/rubocop/rubocop-performance/issues/384): Support optimized `String#dup` for `Performance/UnfreezeString` when Ruby 3.3+. ([@koic][])
+
+### Bug fixes
+
+* [#374](https://github.com/rubocop/rubocop-performance/issues/374): Fix an error for `Performance/MapMethodChain` when using `map` method chain without receiver. ([@koic][])
+* [#386](https://github.com/rubocop/rubocop-performance/issues/386): Fix a false negative for `Performance/StringIdentifierArgument` when using string interpolation. ([@earlopain][])
+* [#419](https://github.com/rubocop/rubocop-performance/pull/419): Make `Performance/Count`, `Performance/FixedSize`, `Performance/FlatMap`, `Performance/InefficientHashSearch`, `Performance/RangeInclude`, `Performance/RedundantSortBlock`, `Performance/ReverseFirst`, `Performance/SelectMap`, `Performance/Size`, `Performance/SortReverse`, and `Performance/TimesMap` cops aware of safe navigation operator. ([@koic][])
+* [#390](https://github.com/rubocop/rubocop-performance/issues/390): Fix a false negative for `Performance/ReverseEach` when safe navigation is between `reverse` and `each`. ([@fatkodima][])
+* [#401](https://github.com/rubocop/rubocop-performance/issues/401): Make `Performance/Sum` aware of safe navigation operator. ([@koic][])
+
+### Changes
+
+* [#389](https://github.com/rubocop/rubocop-performance/issues/389): Improve `Performance/MapCompact` to handle more safe navigation calls. ([@fatkodima][])
+* [#395](https://github.com/rubocop/rubocop-performance/issues/395): Enhance `Performance/StringInclude` to handle `===` method. ([@fatkodima][])
+* [#388](https://github.com/rubocop/rubocop-performance/pull/388): Require RuboCop 1.30+ as runtime dependency. ([@koic][])
+* [#380](https://github.com/rubocop/rubocop-performance/pull/380): Require RuboCop AST 1.30.0+. ([@koic][])
+
 ## 1.19.1 (2023-09-17)
 
 ### Bug fixes
@@ -482,3 +501,4 @@
 [@vlad-pisanov]: https://github.com/vlad-pisanov
 [@ymap]: https://github.com/ymap
 [@tagliala]: https://github.com/tagliala
+[@earlopain]: https://github.com/earlopain
diff --git a/changelog/change_improve_performance_map_compact_to.md b/changelog/change_improve_performance_map_compact_to.md
deleted file mode 100644
index 543f98e6d0..0000000000
--- a/changelog/change_improve_performance_map_compact_to.md
+++ /dev/null
@@ -1 +0,0 @@
-* [#389](https://github.com/rubocop/rubocop-performance/issues/389): Improve `Performance/MapCompact` to handle more safe navigation calls. ([@fatkodima][])
diff --git a/changelog/change_require_rubocop_1_33_as_a_runtime_dependency.md b/changelog/change_require_rubocop_1_33_as_a_runtime_dependency.md
deleted file mode 100644
index 48b258f7a9..0000000000
--- a/changelog/change_require_rubocop_1_33_as_a_runtime_dependency.md
+++ /dev/null
@@ -1 +0,0 @@
-* [#388](https://github.com/rubocop/rubocop-performance/pull/388): Require RuboCop 1.30+ as runtime dependency. ([@koic][])
diff --git a/changelog/change_require_rubocop_ast_1_30.md b/changelog/change_require_rubocop_ast_1_30.md
deleted file mode 100644
index e464067c42..0000000000
--- a/changelog/change_require_rubocop_ast_1_30.md
+++ /dev/null
@@ -1 +0,0 @@
-* [#380](https://github.com/rubocop/rubocop-performance/pull/380): Require RuboCop AST 1.30.0+. ([@koic][])
diff --git a/changelog/change_string_include_to_handle_===.md b/changelog/change_string_include_to_handle_===.md
deleted file mode 100644
index db61f34481..0000000000
--- a/changelog/change_string_include_to_handle_===.md
+++ /dev/null
@@ -1 +0,0 @@
-* [#395](https://github.com/rubocop/rubocop-performance/issues/395): Enhance `Performance/StringInclude` to handle `===` method. ([@fatkodima][])
diff --git a/changelog/fix_a_false_negative_for_string_identifier_argument.md b/changelog/fix_a_false_negative_for_string_identifier_argument.md
deleted file mode 100644
index ba7d8738a1..0000000000
--- a/changelog/fix_a_false_negative_for_string_identifier_argument.md
+++ /dev/null
@@ -1 +0,0 @@
-* [#386](https://github.com/rubocop/rubocop-performance/issues/386): Fix a false negative for `Performance/StringIdentifierArgument` when using string interpolation. ([@earlopain][])
diff --git a/changelog/fix_an_error_for_performance_map_method_chain.md b/changelog/fix_an_error_for_performance_map_method_chain.md
deleted file mode 100644
index e2a240203f..0000000000
--- a/changelog/fix_an_error_for_performance_map_method_chain.md
+++ /dev/null
@@ -1 +0,0 @@
-* [#374](https://github.com/rubocop/rubocop-performance/issues/374): Fix an error for `Performance/MapMethodChain` when using `map` method chain without receiver. ([@koic][])
diff --git a/changelog/fix_false_negative_for_reverse_each.md b/changelog/fix_false_negative_for_reverse_each.md
deleted file mode 100644
index 5d943cea0e..0000000000
--- a/changelog/fix_false_negative_for_reverse_each.md
+++ /dev/null
@@ -1 +0,0 @@
-* [#390](https://github.com/rubocop/rubocop-performance/issues/390): Fix a false negative for `Performance/ReverseEach` when safe navigation is between `reverse` and `each`. ([@fatkodima][])
diff --git a/changelog/fix_make_performance_sum_aware_of_safe_navigation_operator.md b/changelog/fix_make_performance_sum_aware_of_safe_navigation_operator.md
deleted file mode 100644
index fd6fe79f55..0000000000
--- a/changelog/fix_make_performance_sum_aware_of_safe_navigation_operator.md
+++ /dev/null
@@ -1 +0,0 @@
-* [#401](https://github.com/rubocop/rubocop-performance/issues/401): Make `Performance/Sum` aware of safe navigation operator. ([@koic][])
diff --git a/changelog/fix_make_some_cops_aware_of_safe_navigation_operator.md b/changelog/fix_make_some_cops_aware_of_safe_navigation_operator.md
deleted file mode 100644
index ab31a7bbd1..0000000000
--- a/changelog/fix_make_some_cops_aware_of_safe_navigation_operator.md
+++ /dev/null
@@ -1 +0,0 @@
-* [#419](https://github.com/rubocop/rubocop-performance/pull/419): Make `Performance/Count`, `Performance/FixedSize`, `Performance/FlatMap`, `Performance/InefficientHashSearch`, `Performance/RangeInclude`, `Performance/RedundantSortBlock`, `Performance/ReverseFirst`, `Performance/SelectMap`, `Performance/Size`, `Performance/SortReverse`, and `Performance/TimesMap` cops aware of safe navigation operator. ([@koic][])
diff --git a/changelog/new_optimized_string_dup_for_performance_unfreeze_string.md b/changelog/new_optimized_string_dup_for_performance_unfreeze_string.md
deleted file mode 100644
index 120cb7695a..0000000000
--- a/changelog/new_optimized_string_dup_for_performance_unfreeze_string.md
+++ /dev/null
@@ -1 +0,0 @@
-* [#384](https://github.com/rubocop/rubocop-performance/issues/384): Support optimized `String#dup` for `Performance/UnfreezeString` when Ruby 3.3+. ([@koic][])