diff --git a/.github/workflows/prchecks.yml b/.github/workflows/prchecks.yml
index c92eda1..27bbbe3 100644
--- a/.github/workflows/prchecks.yml
+++ b/.github/workflows/prchecks.yml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: 3.x
     - uses: psf/black@20.8b1
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 017d356..ee01a8c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,7 +12,7 @@ jobs:
         steps:
             - uses: actions/checkout@v4
             - name: Set up Python
-              uses: actions/setup-python@v4
+              uses: actions/setup-python@v5
               with:
                 python-version: '3.x'
             - name: Setup environment
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index df6e8f9..fac0a0a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -28,7 +28,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python_version }}
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python_version }}
         architecture: x64
@@ -63,7 +63,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Prepare Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: "3.x"
 
diff --git a/README.md b/README.md
index 926e733..92d29f0 100644
--- a/README.md
+++ b/README.md
@@ -2,29 +2,21 @@
 
 [![Coverage Status](https://coveralls.io/repos/github/Kosmorro/lib/badge.svg?branch=main)](https://coveralls.io/github/Kosmorro/lib?branch=main) [![Version on PyPI](https://img.shields.io/pypi/v/kosmorrolib)](https://pypi.org/project/kosmorrolib)  [![IRC: #kosmorro on Libera.Chat](https://img.shields.io/badge/Libera.Chat-%23kosmorro-blueviolet)](https://web.libera.chat/?nick=Astronaut?#kosmorro)
 
-[![Stand with Ukraine](https://raw.githubusercontent.com/vshymanskyy/StandWithUkraine/main/banner2-direct.svg)](https://github.com/vshymanskyy/StandWithUkraine/blob/main/docs/README.md)
+Kosmorrolib is the Python library internally used in Kosmorro. It provides easy-to-use functions for your calculation needs.
 
-## Installation
-
-### Requirements
-
-Kosmorrolib requires the following software to work:
+The library is built on [Skyfield](https://rhodesmill.org/skyfield/), an excellent library designed to compute positions for any objects in the Solar system.
 
-- Python ≥ 3.8.0
-
-And that's all!
-
-### Production environment
+## Installation
 
-Kosmorrolib is available [on PyPI](https://pypi.org/project/kosmorrolib/). To use it, invoke `pip install kosmorrolib`.
+Take a look at [the official documentation](https://kosmorro.space/lib) for the information about how to install this library.
 
 ### Development environment
 
 To contribute to Kosmorrolib, you will need [Poetry](https://python-poetry.org), a software to manage the project from development to publishing.
 
 Clone this repository and run `poetry install` to install the dependencies.
-And that's all, your development environment is ready for the fight! 👏
+And that's all, your development environment is ready!
 
 ## Documentation
 
-All the documentation can be found [on the website](https://kosmorro.space/lib/doc).
+You can find all the documentation of the library [on the website](https://kosmorro.space/lib/doc).