diff --git a/composer.json b/composer.json
index a4afb61..1b86a6a 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,8 @@
     "description": "Sample PHP application for App Platform",
     "type": "project",
     "require": {
-        "alrik11es/cowsayphp": "^1.2"
+        "alrik11es/cowsayphp": "^1.2",
+        "php": "^8.2.4"
     },
     "authors": [
         {
diff --git a/composer.lock b/composer.lock
index 4675a08..884a7bd 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "16e03395d34a6908d884db19ef1396b5",
+    "content-hash": "a3bc7794cb354caf204150a35e2666ae",
     "packages": [
         {
             "name": "alrik11es/cowsayphp",
@@ -71,7 +71,9 @@
     "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
-    "platform": [],
+    "platform": {
+        "php": "^8.2.4"
+    },
     "platform-dev": [],
-    "plugin-api-version": "2.0.0"
+    "plugin-api-version": "2.3.0"
 }