diff --git a/composer.json b/composer.json
index 49f8e77..f9b161f 100755
--- a/composer.json
+++ b/composer.json
@@ -16,12 +16,12 @@
         "php": "^7.4|^8.0"
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "^3.4",
-        "php-coveralls/php-coveralls": "^2.4",
-        "phpstan/phpstan": "^0.12.65",
+        "friendsofphp/php-cs-fixer": "3.4.0",
+        "php-coveralls/php-coveralls": "2.5.2",
+        "phpstan/phpstan": "0.12.99",
         "phpunit/phpunit": "^8.0|^9.0",
-        "squizlabs/php_codesniffer": "^3.5",
-        "vimeo/psalm": "^4.3"
+        "squizlabs/php_codesniffer": "3.6.2",
+        "vimeo/psalm": "4.15.0"
     },
     "config": {
         "sort-packages": true