diff --git a/.github/workflows/coding-standard.yml b/.github/workflows/coding-standard.yml
index e81644a..ccd5f45 100644
--- a/.github/workflows/coding-standard.yml
+++ b/.github/workflows/coding-standard.yml
@@ -11,8 +11,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ ubuntu-latest, windows-latest, macOS-latest ]
-        php-versions: [ '8.1', '8.2' ]
+        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
+        php-versions: ["8.2", "8.3"]
 
     steps:
       - name: Set git to use LF
diff --git a/.github/workflows/mutation-tests.yml b/.github/workflows/mutation-tests.yml
index 8cc44e6..5df8b8b 100644
--- a/.github/workflows/mutation-tests.yml
+++ b/.github/workflows/mutation-tests.yml
@@ -11,8 +11,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ ubuntu-latest ]
-        php-versions: [ '8.1', '8.2' ]
+        operating-system: [ubuntu-latest]
+        php-versions: ["8.2", "8.3"]
 
     steps:
       - name: Set git to use LF
diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index 93f0cd0..710271f 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -10,7 +10,6 @@ env:
 
 jobs:
   stale:
-
     runs-on: "ubuntu-latest"
 
     steps:
diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
index fa2731a..b280b6c 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -11,8 +11,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ ubuntu-latest, windows-latest, macOS-latest ]
-        php-versions: [ '8.1', '8.2' ]
+        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
+        php-versions: ["8.2", "8.3"]
 
     steps:
       - name: Set git to use LF
diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 73ea062..08403c3 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -11,8 +11,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ ubuntu-latest, windows-latest, macOS-latest ]
-        php-versions: [ '8.1', '8.2' ]
+        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
+        php-versions: ["8.2", "8.3"]
 
     steps:
       - name: Set git to use LF
diff --git a/.phan/config.php b/.phan/config.php
index 6e546fd..e791ec6 100644
--- a/.phan/config.php
+++ b/.phan/config.php
@@ -51,7 +51,7 @@
     // Note that the **only** effect of choosing `'5.6'` is to infer that functions removed in php 7.0 exist.
     // (See `backward_compatibility_checks` for additional options)
     // Automatically inferred from composer.json requirement for "php" of "^7.4 || ^8.0"
-    'target_php_version' => '8.0',
+    'target_php_version' => '8.2',
 
     // If enabled, missing properties will be created when
     // they are first seen. If false, we'll report an
diff --git a/README.md b/README.md
index ee75dee..f7721a0 100644
--- a/README.md
+++ b/README.md
@@ -16,13 +16,13 @@ here: [https://aqicn.org/data-platform/token.](https://aqicn.org/data-platform/t
 
 ## System Requirements
 
-You need *PHP >= 8.1* to use `azuyalabs/waqi`.
+You need _PHP >= 8.2_ to use `azuyalabs/waqi`.
 
 ## Installation
 
 You can pull in this package via composer:
 
-``` shell
+```shell
 composer require azuyalabs/waqi
 ```
 
@@ -46,7 +46,7 @@ $waqi = new WAQI(<your access token>);
 Next, use the `getObservationByStation` method with the desired city or monitoring station name (e.g.
 'new york'). This will obtain the latest air quality observations:
 
-``` php
+```php
 $waqi->getObservationByStation('new york');
 ```
 
@@ -57,7 +57,7 @@ monitoring station.
 
 To get the AQI (Air Quality Index), use the method `getAQI`:
 
-``` php
+```php
 $waqi->getAQI();
 ```
 
@@ -71,7 +71,7 @@ measurement. It contains 4 elements:
 
 Example output (for 'New York'):
 
-```
+```shell
  - 'aqi': 15
  - 'pollution_level': Good
  - 'health_implications': Air quality is considered satisfactory, and air pollution poses little or no risk.
@@ -127,13 +127,13 @@ Please see [CHANGELOG](CHANGELOG.md) for more information what has changed.
 This package comes with a [PHPUnit](https://phpunit.de) test suite. To run the tests, run the following command from the
 project directory:
 
-``` shell
+```shell
 composer test
 ```
 
 ,or alternatively run with:
 
-``` shell
+```shell
 vendor/bin/phpunit
 ```
 
diff --git a/composer.json b/composer.json
index 8067e10..2da493f 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,7 @@
     }
   ],
   "require": {
-    "php": "^8.1",
+    "php": "^8.2",
     "ext-json": "*",
     "guzzlehttp/guzzle": "^7.7"
   },
diff --git a/rector.php b/rector.php
index f1bc750..2a3ac7d 100644
--- a/rector.php
+++ b/rector.php
@@ -21,7 +21,7 @@
         SetList::CODE_QUALITY,
         SetList::DEAD_CODE,
         SetList::EARLY_RETURN,
-        LevelSetList::UP_TO_PHP_81,
+        LevelSetList::UP_TO_PHP_82,
         SetList::TYPE_DECLARATION,
     ]);
 };