diff --git a/README.md b/README.md
index 3b2a378..3225021 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ application environment.
 
 ### Requirements
 
-- PHP 7.3
+- PHP 8.2
 - a config/container.php file (returns a ContainerInterface instance)
 
 ### Composer installation
diff --git a/composer.json b/composer.json
index 9923560..d728339 100644
--- a/composer.json
+++ b/composer.json
@@ -15,12 +15,15 @@
     "mezzio"
   ],
   "config": {
-    "sort-packages": true
+    "sort-packages": true,
+    "allow-plugins": {
+      "infection/extension-installer": true
+    }
   },
   "require": {
-    "php": "^8.0 || ^8.1",
+    "php": "^8.0 || ^8.1 || ^8.2",
     "psr/container": "^1.1.2 || ^2.0.2",
-    "symfony/console": "^v6.0.1"
+    "symfony/console": "^v6.2.5"
   },
   "autoload": {
     "psr-4": {
@@ -29,12 +32,12 @@
   },
   "require-dev": {
     "infection/infection": "^0.25.5",
-    "phpunit/phpunit": "^9.5.10",
+    "phpunit/phpunit": "^9.6.3",
     "php-coveralls/php-coveralls": "2.5.2",
-    "phpstan/phpstan": "1.2.0",
+    "phpstan/phpstan": "1.9.17",
     "phpspec/prophecy": "1.*",
-    "phpstan/phpstan-strict-rules": "^1.1.0",
-    "phpstan/phpstan-phpunit": "^1.0.0",
+    "phpstan/phpstan-strict-rules": "^1.4.5",
+    "phpstan/phpstan-phpunit": "^1.3.4",
     "jangregor/phpstan-prophecy": "1.0.0",
     "squizlabs/php_codesniffer": "^3.6.2"
   },