diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 4cdc3b5..2d6a644 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -9,11 +9,15 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest]
         php: ['8.1', '8.2', '8.3', '8.4']
-        pest: ['2.0', '3.0']
+        pest: ['2.0', '3.0', '4.0']
         dependency-version: [prefer-lowest, prefer-stable]
         exclude:
           - php: '8.1'
             pest: '3.0'
+          - php: '8.1'
+            pest: '4.0'
+          - php: '8.2'
+            pest: '4.0'
 
     name: PHP ${{ matrix.php }} - PEST ^${{ matrix.pest }} - ${{ matrix.os }} - ${{ matrix.dependency-version }}
 
diff --git a/README.md b/README.md
index c4c06fc..275592a 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,13 @@ This plugin affords math related expectations.
 
 [![Tests](https://github.com/faissaloux/pest-plugin-math/actions/workflows/tests.yml/badge.svg)](https://github.com/faissaloux/pest-plugin-math/actions/workflows/tests.yml) ![Codecov](https://img.shields.io/codecov/c/github/faissaloux/pest-plugin-math) ![Packagist Version](https://img.shields.io/packagist/v/faissaloux/pest-plugin-math) ![Packagist License](https://img.shields.io/packagist/l/faissaloux/pest-plugin-math)
 
+## Requirements
+
+| pest   | php     | pest-plugin-math |
+| ------ | ------- | ---------------- |
+| ^2.0   | ^8.1    | ^1.0.0           |
+| ^3.0   | ^8.2    | ^1.3.0           |
+| ^4.0   | ^8.3    | ^1.5.0           |
 
 #### `toBeDivisibleBy()`
 ```php
@@ -100,4 +107,4 @@ $$\sum\limits_n^k x * 2$$
 ```php
     expect(2)->toBeSummationOf(fn (int $x) => $x * 2, from: 0, to: 1);
     expect(3)->not->toBeSummationOf(fn (int $x) => $x * 2, from: 0, to: 1);
-```
\ No newline at end of file
+```
diff --git a/composer.json b/composer.json
index bb0b402..63d29e0 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,7 @@
     ],
     "require": {
         "php": "^8.1",
-        "pestphp/pest": "^2.0 || ^3.0"
+        "pestphp/pest": "^2.0|^3.0|^4.0"
     },
     "require-dev": {
         "phpstan/phpstan": "^1.11.0",