diff --git a/.node_version b/.node_version
new file mode 100644
index 0000000..2ff49b8
--- /dev/null
+++ b/.node_version
@@ -0,0 +1 @@
+v19.3.0
diff --git a/composer.json b/composer.json
index d272b6e..6df3b68 100644
--- a/composer.json
+++ b/composer.json
@@ -21,11 +21,11 @@
         "ext-pdo": "*"
     },
     "require-dev": {
-        "phpunit/phpunit": "@stable",
-        "squizlabs/php_codesniffer": "@stable",
-        "phpmd/phpmd": "@stable",
-        "friendsofphp/php-cs-fixer": "@stable",
-        "phpstan/phpstan": "@stable",
-        "vimeo/psalm": "@stable"
+        "phpunit/phpunit": "^9.5.27",
+        "squizlabs/php_codesniffer": "^3.7.1",
+        "phpmd/phpmd": "^2.13.0",
+        "friendsofphp/php-cs-fixer": "^v2.19.3",
+        "phpstan/phpstan": "^1.9.3",
+        "vimeo/psalm": "^5.2.0"
     }
 }