diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6d618a5f..ac9a48cf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,24 +6,23 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 
-## Unreleased
+## [0.9.0] - 11.12.2024
 
 ### Added
 - `from_config`, `get_config` and `get_params` methods to all models except neural-net-based ([#170](https://github.com/MobileTeleSystems/RecTools/pull/170))
-- `fit_partial` implementation for `ImplicitALSWrapperModel` that allows to fit model for a specific number of epochs and continue training from the previous point ([#203](https://github.com/MobileTeleSystems/RecTools/pull/203), [#210](https://github.com/MobileTeleSystems/RecTools/pull/210))
+- `fit_partial` implementation for `ImplicitALSWrapperModel` and `LightFMWrapperModel` ([#203](https://github.com/MobileTeleSystems/RecTools/pull/203), [#210](https://github.com/MobileTeleSystems/RecTools/pull/210), [#223](https://github.com/MobileTeleSystems/RecTools/pull/223))
 - `save` and `load` methods to all of the models ([#206](https://github.com/MobileTeleSystems/RecTools/pull/206))
-- Model configs example ([#207](https://github.com/MobileTeleSystems/RecTools/pull/207),[#219](https://github.com/MobileTeleSystems/RecTools/pull/219) )
+- Model configs example ([#207](https://github.com/MobileTeleSystems/RecTools/pull/207),[#219](https://github.com/MobileTeleSystems/RecTools/pull/219))
 - `use_gpu` argument to `ImplicitRanker.rank` method ([#201](https://github.com/MobileTeleSystems/RecTools/pull/201))
 - `keep_extra_cols` argument to `Dataset.construct` and `Interactions.from_raw` methods. `include_extra_cols` argument to `Dataset.get_raw_interactions` and `Interactions.to_external` methods ([#208](https://github.com/MobileTeleSystems/RecTools/pull/208))
 - dtype adjustment to `recommend`, `recommend_to_items` methods of `ModelBase` ([#211](https://github.com/MobileTeleSystems/RecTools/pull/211))
 - `load_model` function ([#213](https://github.com/MobileTeleSystems/RecTools/pull/213))
 - `model_from_config` function ([#214](https://github.com/MobileTeleSystems/RecTools/pull/214))
 - `get_cat_features` method to `SparseFeatures` ([#221](https://github.com/MobileTeleSystems/RecTools/pull/221))
-- Support `fit_partial()` for LightFM ([#223](https://github.com/MobileTeleSystems/RecTools/pull/223))
 - LightFM Python 3.12+ support ([#224](https://github.com/MobileTeleSystems/RecTools/pull/224))
 
 ### Fixed
-- Fix Implicit ALS matrix zero assignment size ([#228](https://github.com/MobileTeleSystems/RecTools/pull/228))
+- Implicit ALS matrix zero assignment size ([#228](https://github.com/MobileTeleSystems/RecTools/pull/228))
 
 ### Removed
 - Python 3.8 support ([#222](https://github.com/MobileTeleSystems/RecTools/pull/222))
diff --git a/pyproject.toml b/pyproject.toml
index 2ec3f9ab..e30499f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "RecTools"
-version = "0.8.0"
+version = "0.9.0"
 description = "An easy-to-use Python library for building recommendation systems"
 license = "Apache-2.0"
 authors = [
diff --git a/rectools/models/serialization.py b/rectools/models/serialization.py
index ae0cc428..48bcd867 100644
--- a/rectools/models/serialization.py
+++ b/rectools/models/serialization.py
@@ -1,3 +1,17 @@
+#  Copyright 2024 MTS (Mobile Telesystems)
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
 import pickle
 import typing as tp
 
diff --git a/rectools/utils/config.py b/rectools/utils/config.py
index b3344a2b..10c74705 100644
--- a/rectools/utils/config.py
+++ b/rectools/utils/config.py
@@ -1,3 +1,17 @@
+#  Copyright 2024 MTS (Mobile Telesystems)
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
 from pydantic import BaseModel
 
 
diff --git a/rectools/utils/serialization.py b/rectools/utils/serialization.py
index 577047fa..5447aa7a 100644
--- a/rectools/utils/serialization.py
+++ b/rectools/utils/serialization.py
@@ -1,3 +1,17 @@
+#  Copyright 2024 MTS (Mobile Telesystems)
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
 import typing as tp
 from pathlib import Path
 
diff --git a/rectools/version.py b/rectools/version.py
index 6ff3b162..e05b4452 100644
--- a/rectools/version.py
+++ b/rectools/version.py
@@ -12,4 +12,4 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 
-VERSION = "0.8.0"
+VERSION = "0.9.0"
diff --git a/tests/models/test_serialization.py b/tests/models/test_serialization.py
index c46f19be..19626379 100644
--- a/tests/models/test_serialization.py
+++ b/tests/models/test_serialization.py
@@ -1,3 +1,17 @@
+#  Copyright 2024 MTS (Mobile Telesystems)
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
 import typing as tp
 from tempfile import NamedTemporaryFile